/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sum_natnum.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:19:23,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:19:23,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:19:23,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 13:19:23,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:19:23,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:19:23,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:19:23,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:19:23,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:19:23,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:19:23,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:19:23,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:19:23,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:19:23,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:19:23,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:19:23,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:19:23,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 13:19:23,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:19:23,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:19:23,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:19:23,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 13:19:23,376 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:19:23,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:19:23,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:19:23,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:19:23,379 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:19:23,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:19:23,379 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:19:23,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:19:23,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:19:23,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:19:23,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:19:23,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:19:23,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:19:23,380 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:19:23,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:19:23,380 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:19:23,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:19:23,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:19:23,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:19:23,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:19:23,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:19:23,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:19:23,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:19:23,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:19:23,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:19:23,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:19:23,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:19:23,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:19:23,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:19:23,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:19:23,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:19:23,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:19:23,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:19:23,734 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:19:23,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sum_natnum.c [2021-05-02 13:19:23,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d1aa131a/05cbbfff00034961a91051ebd43adeb1/FLAG4fac8236c [2021-05-02 13:19:24,316 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:19:24,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sum_natnum.c [2021-05-02 13:19:24,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d1aa131a/05cbbfff00034961a91051ebd43adeb1/FLAG4fac8236c [2021-05-02 13:19:24,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d1aa131a/05cbbfff00034961a91051ebd43adeb1 [2021-05-02 13:19:24,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:19:24,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:19:24,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:19:24,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:19:24,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:19:24,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:19:24" (1/1) ... [2021-05-02 13:19:24,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49984f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24, skipping insertion in model container [2021-05-02 13:19:24,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:19:24" (1/1) ... [2021-05-02 13:19:24,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:19:24,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:19:24,883 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sum_natnum.c[458,471] [2021-05-02 13:19:24,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:19:24,901 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:19:24,912 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sum_natnum.c[458,471] [2021-05-02 13:19:24,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:19:24,947 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:19:24,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24 WrapperNode [2021-05-02 13:19:24,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:19:24,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:19:24,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:19:24,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:19:24,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24" (1/1) ... [2021-05-02 13:19:24,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24" (1/1) ... [2021-05-02 13:19:24,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24" (1/1) ... [2021-05-02 13:19:24,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24" (1/1) ... [2021-05-02 13:19:24,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24" (1/1) ... [2021-05-02 13:19:24,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24" (1/1) ... [2021-05-02 13:19:24,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24" (1/1) ... [2021-05-02 13:19:25,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:19:25,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:19:25,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:19:25,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:19:25,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:19:25,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:19:25,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:19:25,082 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:19:25,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 13:19:25,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:19:25,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:19:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 13:19:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 13:19:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:19:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:19:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:19:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 13:19:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:19:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:19:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:19:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:19:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:19:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:19:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:19:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:19:25,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:19:25,383 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 13:19:25,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:19:25 BoogieIcfgContainer [2021-05-02 13:19:25,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:19:25,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:19:25,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:19:25,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:19:25,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:19:24" (1/3) ... [2021-05-02 13:19:25,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97b8fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:19:25, skipping insertion in model container [2021-05-02 13:19:25,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:24" (2/3) ... [2021-05-02 13:19:25,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97b8fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:19:25, skipping insertion in model container [2021-05-02 13:19:25,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:19:25" (3/3) ... [2021-05-02 13:19:25,393 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_natnum.c [2021-05-02 13:19:25,427 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:19:25,431 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:19:25,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:19:25,482 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:19:25,482 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:19:25,482 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:19:25,482 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:19:25,483 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:19:25,483 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:19:25,483 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:19:25,483 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:19:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 13:19:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 13:19:25,514 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:25,515 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:25,516 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:25,523 INFO L82 PathProgramCache]: Analyzing trace with hash -407588949, now seen corresponding path program 1 times [2021-05-02 13:19:25,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:25,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026462006] [2021-05-02 13:19:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:25,652 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:19:25,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294480623] [2021-05-02 13:19:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:25,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 13:19:25,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:25,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:25,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:25,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026462006] [2021-05-02 13:19:25,945 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:19:25,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294480623] [2021-05-02 13:19:25,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294480623] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:19:25,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:19:25,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 13:19:25,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153310537] [2021-05-02 13:19:25,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 13:19:25,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:25,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 13:19:25,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-02 13:19:25,968 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:30,072 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-05-02 13:19:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 13:19:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 13:19:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:30,080 INFO L225 Difference]: With dead ends: 32 [2021-05-02 13:19:30,080 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 13:19:30,083 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-02 13:19:30,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 13:19:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 13:19:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 13:19:30,112 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-02 13:19:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:30,112 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 13:19:30,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:30,113 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 13:19:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:19:30,113 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:30,113 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:30,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-05-02 13:19:30,330 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:30,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:30,330 INFO L82 PathProgramCache]: Analyzing trace with hash 284139538, now seen corresponding path program 1 times [2021-05-02 13:19:30,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:30,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685747276] [2021-05-02 13:19:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:30,349 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:19:30,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979823710] [2021-05-02 13:19:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 13:19:30,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:30,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:30,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:30,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:30,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:30,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685747276] [2021-05-02 13:19:30,473 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:19:30,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979823710] [2021-05-02 13:19:30,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979823710] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:30,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:19:30,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 13:19:30,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176031328] [2021-05-02 13:19:30,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 13:19:30,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:30,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 13:19:30,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:19:30,476 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:32,522 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-05-02 13:19:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 13:19:32,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 13:19:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:32,533 INFO L225 Difference]: With dead ends: 19 [2021-05-02 13:19:32,533 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 13:19:32,534 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:19:32,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 13:19:32,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 13:19:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 13:19:32,536 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-02 13:19:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:32,537 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 13:19:32,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 13:19:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 13:19:32,537 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:32,537 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:32,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:32,738 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:32,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:32,739 INFO L82 PathProgramCache]: Analyzing trace with hash 252886155, now seen corresponding path program 2 times [2021-05-02 13:19:32,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:32,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98464718] [2021-05-02 13:19:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:32,761 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:19:32,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074822968] [2021-05-02 13:19:32,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:32,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:19:32,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:32,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 13:19:32,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:32,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:32,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:32,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98464718] [2021-05-02 13:19:32,936 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:19:32,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074822968] [2021-05-02 13:19:32,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074822968] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:32,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:19:32,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 13:19:32,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475464331] [2021-05-02 13:19:32,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 13:19:32,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 13:19:32,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-05-02 13:19:32,938 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:34,990 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 13:19:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 13:19:35,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 13:19:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:35,007 INFO L225 Difference]: With dead ends: 20 [2021-05-02 13:19:35,007 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 13:19:35,008 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-05-02 13:19:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 13:19:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 13:19:35,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 13:19:35,024 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-02 13:19:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:35,025 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 13:19:35,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:35,026 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 13:19:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 13:19:35,027 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:35,027 INFO L523 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:35,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:35,241 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:35,242 INFO L82 PathProgramCache]: Analyzing trace with hash -715968718, now seen corresponding path program 3 times [2021-05-02 13:19:35,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:35,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10254558] [2021-05-02 13:19:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:35,258 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:19:35,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355279282] [2021-05-02 13:19:35,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:35,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 13:19:35,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:35,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 13:19:35,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:35,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:35,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:35,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:35,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:35,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:35,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:35,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:35,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10254558] [2021-05-02 13:19:35,522 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:19:35,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355279282] [2021-05-02 13:19:35,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355279282] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:35,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:19:35,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 13:19:35,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139564429] [2021-05-02 13:19:35,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 13:19:35,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:35,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 13:19:35,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-05-02 13:19:35,524 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:39,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:39,578 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-02 13:19:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 13:19:39,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 13:19:39,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:39,589 INFO L225 Difference]: With dead ends: 21 [2021-05-02 13:19:39,590 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 13:19:39,590 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-05-02 13:19:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 13:19:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 13:19:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 13:19:39,593 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-05-02 13:19:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:39,594 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 13:19:39,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 13:19:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 13:19:39,594 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:39,595 INFO L523 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:39,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:39,796 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:39,796 INFO L82 PathProgramCache]: Analyzing trace with hash -685698709, now seen corresponding path program 4 times [2021-05-02 13:19:39,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:39,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928029490] [2021-05-02 13:19:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:39,819 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:19:39,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549383610] [2021-05-02 13:19:39,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:39,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:19:39,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:39,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 13:19:39,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:39,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:39,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:39,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:39,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:39,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:39,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:39,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:39,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:40,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:40,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:40,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928029490] [2021-05-02 13:19:40,034 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:19:40,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549383610] [2021-05-02 13:19:40,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549383610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:40,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:19:40,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 13:19:40,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323965831] [2021-05-02 13:19:40,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 13:19:40,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:40,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 13:19:40,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-05-02 13:19:40,037 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:42,083 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-05-02 13:19:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 13:19:42,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 13:19:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:42,100 INFO L225 Difference]: With dead ends: 22 [2021-05-02 13:19:42,100 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 13:19:42,101 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-05-02 13:19:42,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 13:19:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 13:19:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-02 13:19:42,105 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-05-02 13:19:42,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:42,105 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-02 13:19:42,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-02 13:19:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 13:19:42,106 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:42,106 INFO L523 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:42,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:42,312 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:42,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:42,313 INFO L82 PathProgramCache]: Analyzing trace with hash 252671570, now seen corresponding path program 5 times [2021-05-02 13:19:42,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:42,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791845047] [2021-05-02 13:19:42,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:42,348 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:19:42,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022915840] [2021-05-02 13:19:42,349 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:42,409 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-05-02 13:19:42,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:42,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 13:19:42,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:42,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:42,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:42,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791845047] [2021-05-02 13:19:42,559 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:19:42,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022915840] [2021-05-02 13:19:42,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022915840] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:42,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:19:42,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 13:19:42,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639319638] [2021-05-02 13:19:42,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 13:19:42,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:42,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 13:19:42,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-05-02 13:19:42,561 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:46,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:46,622 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-05-02 13:19:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 13:19:46,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-02 13:19:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:46,632 INFO L225 Difference]: With dead ends: 23 [2021-05-02 13:19:46,632 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 13:19:46,633 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.0ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-05-02 13:19:46,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 13:19:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 13:19:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 13:19:46,639 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-05-02 13:19:46,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:46,639 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 13:19:46,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:46,639 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 13:19:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 13:19:46,640 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:46,640 INFO L523 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:46,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:46,841 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:46,842 INFO L82 PathProgramCache]: Analyzing trace with hash -722620853, now seen corresponding path program 6 times [2021-05-02 13:19:46,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:46,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795784044] [2021-05-02 13:19:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:46,863 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:19:46,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432196147] [2021-05-02 13:19:46,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:46,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-05-02 13:19:46,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:46,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 13:19:46,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:46,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:46,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:46,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:46,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:47,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:47,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795784044] [2021-05-02 13:19:47,136 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:19:47,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432196147] [2021-05-02 13:19:47,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432196147] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:47,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:19:47,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 13:19:47,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108507727] [2021-05-02 13:19:47,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 13:19:47,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:47,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 13:19:47,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-05-02 13:19:47,138 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:49,189 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-05-02 13:19:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 13:19:49,205 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 13:19:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:49,206 INFO L225 Difference]: With dead ends: 24 [2021-05-02 13:19:49,206 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 13:19:49,206 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-05-02 13:19:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 13:19:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 13:19:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-05-02 13:19:49,209 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2021-05-02 13:19:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:49,210 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-05-02 13:19:49,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-05-02 13:19:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 13:19:49,210 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:49,210 INFO L523 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:49,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:49,413 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash -891914894, now seen corresponding path program 7 times [2021-05-02 13:19:49,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:49,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768231631] [2021-05-02 13:19:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:49,425 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:19:49,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306936018] [2021-05-02 13:19:49,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:49,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 13:19:49,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:49,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:49,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768231631] [2021-05-02 13:19:49,663 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:19:49,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306936018] [2021-05-02 13:19:49,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306936018] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:49,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:19:49,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 13:19:49,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308352726] [2021-05-02 13:19:49,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 13:19:49,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:49,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 13:19:49,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-05-02 13:19:49,665 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:51,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:51,706 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-05-02 13:19:51,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 13:19:51,721 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-05-02 13:19:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:51,722 INFO L225 Difference]: With dead ends: 25 [2021-05-02 13:19:51,722 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 13:19:51,722 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-05-02 13:19:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 13:19:51,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-02 13:19:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-05-02 13:19:51,726 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2021-05-02 13:19:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:51,726 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-05-02 13:19:51,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:51,726 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-05-02 13:19:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 13:19:51,727 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:51,727 INFO L523 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:51,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-05-02 13:19:51,937 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:51,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1845062869, now seen corresponding path program 8 times [2021-05-02 13:19:51,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:51,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295155438] [2021-05-02 13:19:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:51,952 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:19:51,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879198252] [2021-05-02 13:19:51,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:52,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:19:52,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:52,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 13:19:52,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:52,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:52,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:52,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295155438] [2021-05-02 13:19:52,165 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:19:52,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879198252] [2021-05-02 13:19:52,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879198252] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:52,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:19:52,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 13:19:52,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81202448] [2021-05-02 13:19:52,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 13:19:52,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 13:19:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-05-02 13:19:52,167 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:20:07,518 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-05-02 13:20:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 13:20:07,519 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-02 13:20:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:20:07,520 INFO L225 Difference]: With dead ends: 26 [2021-05-02 13:20:07,520 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 13:20:07,520 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-05-02 13:20:07,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 13:20:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-05-02 13:20:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-05-02 13:20:07,524 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2021-05-02 13:20:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:20:07,524 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-05-02 13:20:07,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-05-02 13:20:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 13:20:07,525 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:20:07,525 INFO L523 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:20:07,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:20:07,736 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:20:07,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:20:07,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1327879022, now seen corresponding path program 9 times [2021-05-02 13:20:07,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:20:07,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334054753] [2021-05-02 13:20:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:20:07,786 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:20:07,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328727725] [2021-05-02 13:20:07,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:20:07,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 13:20:07,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:20:07,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 13:20:07,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:20:07,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:07,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:08,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:08,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:08,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:08,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:08,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:20:08,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:20:08,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334054753] [2021-05-02 13:20:08,077 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:20:08,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328727725] [2021-05-02 13:20:08,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328727725] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:08,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:20:08,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 13:20:08,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680781309] [2021-05-02 13:20:08,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 13:20:08,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:20:08,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 13:20:08,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-05-02 13:20:08,080 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:20:18,845 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-05-02 13:20:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 13:20:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-05-02 13:20:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:20:18,850 INFO L225 Difference]: With dead ends: 27 [2021-05-02 13:20:18,850 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 13:20:18,850 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 135.1ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-05-02 13:20:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 13:20:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-02 13:20:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-05-02 13:20:18,854 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2021-05-02 13:20:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:20:18,854 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-05-02 13:20:18,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-05-02 13:20:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 13:20:18,854 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:20:18,855 INFO L523 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:20:19,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:20:19,063 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:20:19,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:20:19,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1819918347, now seen corresponding path program 10 times [2021-05-02 13:20:19,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:20:19,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830275664] [2021-05-02 13:20:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:20:19,088 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:20:19,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903774890] [2021-05-02 13:20:19,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:20:19,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:20:19,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:20:19,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 13:20:19,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:20:19,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:20:19,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:20:19,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830275664] [2021-05-02 13:20:19,384 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:20:19,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903774890] [2021-05-02 13:20:19,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903774890] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:19,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:20:19,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 13:20:19,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67397980] [2021-05-02 13:20:19,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 13:20:19,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:20:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 13:20:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-05-02 13:20:19,386 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:33,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:20:33,260 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-05-02 13:20:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 13:20:33,261 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-02 13:20:33,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:20:33,262 INFO L225 Difference]: With dead ends: 28 [2021-05-02 13:20:33,262 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 13:20:33,262 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 139.4ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-05-02 13:20:33,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 13:20:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-05-02 13:20:33,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-05-02 13:20:33,286 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2021-05-02 13:20:33,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:20:33,287 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-05-02 13:20:33,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:33,287 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-05-02 13:20:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 13:20:33,287 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:20:33,287 INFO L523 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:20:33,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 13:20:33,488 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:20:33,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:20:33,489 INFO L82 PathProgramCache]: Analyzing trace with hash 617388978, now seen corresponding path program 11 times [2021-05-02 13:20:33,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:20:33,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170814232] [2021-05-02 13:20:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:20:33,499 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:20:33,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054027297] [2021-05-02 13:20:33,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:20:33,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-05-02 13:20:33,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:20:33,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 13:20:33,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:20:33,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:20:33,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:20:33,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170814232] [2021-05-02 13:20:33,803 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:20:33,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054027297] [2021-05-02 13:20:33,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054027297] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:33,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:20:33,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-02 13:20:33,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412247018] [2021-05-02 13:20:33,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 13:20:33,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:20:33,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 13:20:33,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-05-02 13:20:33,805 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:41,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:20:41,891 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-05-02 13:20:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 13:20:41,919 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-05-02 13:20:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:20:41,920 INFO L225 Difference]: With dead ends: 29 [2021-05-02 13:20:41,920 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 13:20:41,921 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 161.6ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-05-02 13:20:41,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 13:20:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 13:20:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-05-02 13:20:41,925 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2021-05-02 13:20:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:20:41,926 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-05-02 13:20:41,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-05-02 13:20:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 13:20:41,926 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:20:41,926 INFO L523 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:20:42,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:20:42,135 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:20:42,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:20:42,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1993684203, now seen corresponding path program 12 times [2021-05-02 13:20:42,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:20:42,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765412704] [2021-05-02 13:20:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:20:42,152 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:20:42,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209852993] [2021-05-02 13:20:42,152 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:20:42,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 13:20:42,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:20:42,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 13:20:42,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:20:42,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:20:42,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:20:42,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765412704] [2021-05-02 13:20:42,492 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:20:42,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209852993] [2021-05-02 13:20:42,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209852993] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:42,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:20:42,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-05-02 13:20:42,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674199372] [2021-05-02 13:20:42,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 13:20:42,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:20:42,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 13:20:42,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-05-02 13:20:42,494 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:20:51,617 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-05-02 13:20:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 13:20:51,617 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-02 13:20:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:20:51,618 INFO L225 Difference]: With dead ends: 30 [2021-05-02 13:20:51,618 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 13:20:51,619 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 172.0ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-05-02 13:20:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 13:20:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 13:20:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-05-02 13:20:51,622 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2021-05-02 13:20:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:20:51,622 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-05-02 13:20:51,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-05-02 13:20:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 13:20:51,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:20:51,623 INFO L523 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:20:51,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 13:20:51,833 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:20:51,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:20:51,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1709163218, now seen corresponding path program 13 times [2021-05-02 13:20:51,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:20:51,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274372272] [2021-05-02 13:20:51,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:20:51,851 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:20:51,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782371588] [2021-05-02 13:20:51,852 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:20:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:20:51,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 13:20:51,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:20:51,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:51,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:51,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:51,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:51,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:51,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:51,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:51,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:51,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:51,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:20:52,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:20:52,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274372272] [2021-05-02 13:20:52,193 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:20:52,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782371588] [2021-05-02 13:20:52,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782371588] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:52,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:20:52,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-05-02 13:20:52,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639997471] [2021-05-02 13:20:52,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 13:20:52,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:20:52,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 13:20:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-05-02 13:20:52,197 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:21:02,808 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-05-02 13:21:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 13:21:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-05-02 13:21:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:21:02,809 INFO L225 Difference]: With dead ends: 31 [2021-05-02 13:21:02,809 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 13:21:02,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 199.9ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-05-02 13:21:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 13:21:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-02 13:21:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:02,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-05-02 13:21:02,815 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2021-05-02 13:21:02,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:21:02,815 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-05-02 13:21:02,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-05-02 13:21:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 13:21:02,816 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:21:02,816 INFO L523 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:21:03,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:21:03,017 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:21:03,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:21:03,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1478947275, now seen corresponding path program 14 times [2021-05-02 13:21:03,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:21:03,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676633813] [2021-05-02 13:21:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:21:03,025 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:21:03,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976997209] [2021-05-02 13:21:03,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:21:03,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:21:03,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:21:03,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 13:21:03,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:21:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:21:03,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:21:03,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676633813] [2021-05-02 13:21:03,456 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:21:03,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976997209] [2021-05-02 13:21:03,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976997209] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:21:03,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:21:03,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-05-02 13:21:03,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711479498] [2021-05-02 13:21:03,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 13:21:03,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:21:03,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 13:21:03,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-05-02 13:21:03,459 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:11,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:21:11,427 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-05-02 13:21:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 13:21:11,435 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-05-02 13:21:11,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:21:11,436 INFO L225 Difference]: With dead ends: 32 [2021-05-02 13:21:11,436 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 13:21:11,437 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 236.2ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-05-02 13:21:11,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 13:21:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 13:21:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:11,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-05-02 13:21:11,440 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2021-05-02 13:21:11,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:21:11,441 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-05-02 13:21:11,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:11,441 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-05-02 13:21:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 13:21:11,441 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:21:11,441 INFO L523 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:21:11,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 13:21:11,653 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:21:11,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:21:11,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1362779662, now seen corresponding path program 15 times [2021-05-02 13:21:11,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:21:11,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875559543] [2021-05-02 13:21:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:21:11,662 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:21:11,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195618056] [2021-05-02 13:21:11,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:21:11,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-05-02 13:21:11,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:21:11,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 13:21:11,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:21:11,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:11,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:21:12,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:21:12,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875559543] [2021-05-02 13:21:12,151 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:21:12,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195618056] [2021-05-02 13:21:12,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195618056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:21:12,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:21:12,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-05-02 13:21:12,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985732531] [2021-05-02 13:21:12,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 13:21:12,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:21:12,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 13:21:12,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-05-02 13:21:12,153 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:21:28,761 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-05-02 13:21:28,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 13:21:28,769 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-05-02 13:21:28,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:21:28,771 INFO L225 Difference]: With dead ends: 33 [2021-05-02 13:21:28,771 INFO L226 Difference]: Without dead ends: 28 [2021-05-02 13:21:28,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 254.6ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-05-02 13:21:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-02 13:21:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-05-02 13:21:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-05-02 13:21:28,774 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2021-05-02 13:21:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:21:28,774 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-05-02 13:21:28,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-05-02 13:21:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 13:21:28,775 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:21:28,775 INFO L523 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:21:28,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 13:21:28,976 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:21:28,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:21:28,976 INFO L82 PathProgramCache]: Analyzing trace with hash 737998507, now seen corresponding path program 16 times [2021-05-02 13:21:28,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:21:28,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604476281] [2021-05-02 13:21:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:21:29,002 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:21:29,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402434858] [2021-05-02 13:21:29,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:21:29,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:21:29,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:21:29,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 13:21:29,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:21:29,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:21:29,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:21:29,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604476281] [2021-05-02 13:21:29,453 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:21:29,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402434858] [2021-05-02 13:21:29,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402434858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:21:29,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:21:29,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-05-02 13:21:29,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14217482] [2021-05-02 13:21:29,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 13:21:29,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:21:29,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 13:21:29,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-05-02 13:21:29,455 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:33,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:21:33,524 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-05-02 13:21:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 13:21:33,540 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-02 13:21:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:21:33,540 INFO L225 Difference]: With dead ends: 34 [2021-05-02 13:21:33,540 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 13:21:33,541 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 262.7ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-05-02 13:21:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 13:21:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 13:21:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-05-02 13:21:33,544 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2021-05-02 13:21:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:21:33,545 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-05-02 13:21:33,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-05-02 13:21:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 13:21:33,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:21:33,546 INFO L523 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:21:33,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 13:21:33,757 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:21:33,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:21:33,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1437612306, now seen corresponding path program 17 times [2021-05-02 13:21:33,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:21:33,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4429388] [2021-05-02 13:21:33,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:21:33,767 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:21:33,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16649836] [2021-05-02 13:21:33,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:21:33,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-05-02 13:21:33,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:21:33,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 13:21:33,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:21:33,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:33,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:21:34,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:21:34,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4429388] [2021-05-02 13:21:34,245 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:21:34,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16649836] [2021-05-02 13:21:34,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16649836] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:21:34,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:21:34,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-02 13:21:34,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560941607] [2021-05-02 13:21:34,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 13:21:34,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:21:34,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 13:21:34,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-05-02 13:21:34,250 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:21:42,309 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-05-02 13:21:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 13:21:42,310 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-05-02 13:21:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:21:42,310 INFO L225 Difference]: With dead ends: 35 [2021-05-02 13:21:42,310 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 13:21:42,311 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 323.0ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-05-02 13:21:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 13:21:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 13:21:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-05-02 13:21:42,314 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2021-05-02 13:21:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:21:42,314 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-05-02 13:21:42,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-05-02 13:21:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 13:21:42,315 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:21:42,315 INFO L523 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:21:42,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 13:21:42,519 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:21:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:21:42,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1650803595, now seen corresponding path program 18 times [2021-05-02 13:21:42,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:21:42,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504035004] [2021-05-02 13:21:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:21:42,528 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:21:42,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859520597] [2021-05-02 13:21:42,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:21:42,615 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-02 13:21:42,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:21:42,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 13:21:42,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:21:42,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:21:42,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:21:42,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504035004] [2021-05-02 13:21:42,997 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:21:42,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859520597] [2021-05-02 13:21:42,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859520597] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:21:42,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:21:42,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-05-02 13:21:42,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4395006] [2021-05-02 13:21:42,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 13:21:42,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:21:42,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 13:21:42,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-05-02 13:21:42,999 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:50,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:21:50,449 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-05-02 13:21:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 13:21:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-02 13:21:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:21:50,457 INFO L225 Difference]: With dead ends: 36 [2021-05-02 13:21:50,457 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 13:21:50,457 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 277.0ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-05-02 13:21:50,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 13:21:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-02 13:21:50,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-05-02 13:21:50,460 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2021-05-02 13:21:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:21:50,461 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-05-02 13:21:50,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-05-02 13:21:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-02 13:21:50,466 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:21:50,466 INFO L523 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:21:50,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:21:50,668 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:21:50,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:21:50,668 INFO L82 PathProgramCache]: Analyzing trace with hash -330201038, now seen corresponding path program 19 times [2021-05-02 13:21:50,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:21:50,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732699444] [2021-05-02 13:21:50,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:21:50,682 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:21:50,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214006019] [2021-05-02 13:21:50,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:21:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:21:50,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 13:21:50,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:21:50,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:50,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:21:51,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:21:51,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732699444] [2021-05-02 13:21:51,162 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:21:51,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214006019] [2021-05-02 13:21:51,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214006019] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:21:51,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:21:51,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-05-02 13:21:51,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263472657] [2021-05-02 13:21:51,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 13:21:51,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:21:51,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 13:21:51,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-05-02 13:21:51,163 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:22:07,529 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-05-02 13:22:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 13:22:07,529 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-05-02 13:22:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:22:07,530 INFO L225 Difference]: With dead ends: 37 [2021-05-02 13:22:07,530 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 13:22:07,530 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 294.1ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-05-02 13:22:07,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 13:22:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 13:22:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-05-02 13:22:07,533 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2021-05-02 13:22:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:22:07,533 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-05-02 13:22:07,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-05-02 13:22:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 13:22:07,534 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:22:07,534 INFO L523 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:22:07,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:07,742 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:22:07,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:22:07,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1611802517, now seen corresponding path program 20 times [2021-05-02 13:22:07,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:22:07,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562311366] [2021-05-02 13:22:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:22:07,749 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:22:07,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069071884] [2021-05-02 13:22:07,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:07,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:22:07,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:22:07,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 13:22:07,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:22:07,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:07,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:22:08,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:22:08,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562311366] [2021-05-02 13:22:08,239 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:22:08,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069071884] [2021-05-02 13:22:08,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069071884] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:22:08,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:22:08,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-05-02 13:22:08,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195320169] [2021-05-02 13:22:08,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 13:22:08,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:22:08,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 13:22:08,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-05-02 13:22:08,240 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:22:10,295 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-05-02 13:22:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 13:22:10,333 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-02 13:22:10,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:22:10,333 INFO L225 Difference]: With dead ends: 38 [2021-05-02 13:22:10,334 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 13:22:10,334 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 307.3ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-05-02 13:22:10,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 13:22:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-02 13:22:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-05-02 13:22:10,337 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2021-05-02 13:22:10,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:22:10,337 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-05-02 13:22:10,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:10,337 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-05-02 13:22:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-02 13:22:10,337 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:22:10,338 INFO L523 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:22:10,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 13:22:10,538 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:22:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:22:10,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1608224594, now seen corresponding path program 21 times [2021-05-02 13:22:10,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:22:10,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255241019] [2021-05-02 13:22:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:22:10,548 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:22:10,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228661666] [2021-05-02 13:22:10,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:10,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-05-02 13:22:10,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:22:10,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 13:22:10,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:22:10,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:10,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:11,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:11,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:11,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:11,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:11,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:11,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:11,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:22:11,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:22:11,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255241019] [2021-05-02 13:22:11,109 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:22:11,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228661666] [2021-05-02 13:22:11,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228661666] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:22:11,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:22:11,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-05-02 13:22:11,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250591676] [2021-05-02 13:22:11,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 13:22:11,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:22:11,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 13:22:11,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-05-02 13:22:11,110 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:22:15,173 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-05-02 13:22:15,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 13:22:15,199 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-05-02 13:22:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:22:15,200 INFO L225 Difference]: With dead ends: 39 [2021-05-02 13:22:15,200 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 13:22:15,200 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 345.2ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-05-02 13:22:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 13:22:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 13:22:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-05-02 13:22:15,206 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2021-05-02 13:22:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:22:15,207 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-05-02 13:22:15,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-05-02 13:22:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 13:22:15,207 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:22:15,207 INFO L523 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:22:15,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:15,408 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:22:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:22:15,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1650150069, now seen corresponding path program 22 times [2021-05-02 13:22:15,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:22:15,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312911138] [2021-05-02 13:22:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:22:15,414 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:22:15,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390309637] [2021-05-02 13:22:15,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:15,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:22:15,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:22:15,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 13:22:15,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:22:15,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:22:15,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:22:15,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312911138] [2021-05-02 13:22:15,921 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:22:15,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390309637] [2021-05-02 13:22:15,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390309637] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:22:15,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:22:15,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-05-02 13:22:15,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120107453] [2021-05-02 13:22:15,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 13:22:15,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:22:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 13:22:15,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-05-02 13:22:15,922 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:22:17,985 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-05-02 13:22:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 13:22:17,996 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-05-02 13:22:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:22:17,997 INFO L225 Difference]: With dead ends: 40 [2021-05-02 13:22:17,997 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 13:22:17,997 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 346.2ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-05-02 13:22:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 13:22:17,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 13:22:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-05-02 13:22:18,001 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2021-05-02 13:22:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:22:18,001 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-05-02 13:22:18,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-05-02 13:22:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 13:22:18,002 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:22:18,002 INFO L523 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:22:18,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 13:22:18,206 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:22:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:22:18,206 INFO L82 PathProgramCache]: Analyzing trace with hash 419450482, now seen corresponding path program 23 times [2021-05-02 13:22:18,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:22:18,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099624108] [2021-05-02 13:22:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:22:18,213 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:22:18,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118020732] [2021-05-02 13:22:18,213 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:18,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-05-02 13:22:18,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:22:18,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 13:22:18,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:22:18,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:22:18,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:22:18,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099624108] [2021-05-02 13:22:18,758 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:22:18,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118020732] [2021-05-02 13:22:18,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118020732] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:22:18,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:22:18,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-05-02 13:22:18,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072803243] [2021-05-02 13:22:18,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 13:22:18,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:22:18,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 13:22:18,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-05-02 13:22:18,760 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:22:20,844 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-05-02 13:22:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 13:22:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-05-02 13:22:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:22:20,860 INFO L225 Difference]: With dead ends: 41 [2021-05-02 13:22:20,860 INFO L226 Difference]: Without dead ends: 36 [2021-05-02 13:22:20,860 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 388.3ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-05-02 13:22:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-02 13:22:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-02 13:22:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-05-02 13:22:20,863 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2021-05-02 13:22:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:22:20,863 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-05-02 13:22:20,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-05-02 13:22:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 13:22:20,863 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:22:20,864 INFO L523 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:22:21,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:21,067 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:22:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:22:21,067 INFO L82 PathProgramCache]: Analyzing trace with hash 152558123, now seen corresponding path program 24 times [2021-05-02 13:22:21,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:22:21,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974536850] [2021-05-02 13:22:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:22:21,077 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:22:21,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852227] [2021-05-02 13:22:21,077 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:21,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 13:22:21,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:22:21,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 13:22:21,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:22:21,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:22:21,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:22:21,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974536850] [2021-05-02 13:22:21,633 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:22:21,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852227] [2021-05-02 13:22:21,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852227] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:22:21,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:22:21,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-05-02 13:22:21,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990468389] [2021-05-02 13:22:21,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 13:22:21,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:22:21,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 13:22:21,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-05-02 13:22:21,635 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:22:27,938 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-05-02 13:22:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 13:22:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-02 13:22:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:22:27,940 INFO L225 Difference]: With dead ends: 42 [2021-05-02 13:22:27,940 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 13:22:27,940 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 393.1ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-05-02 13:22:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 13:22:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-05-02 13:22:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-05-02 13:22:27,943 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2021-05-02 13:22:27,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:22:27,943 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-05-02 13:22:27,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-05-02 13:22:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 13:22:27,944 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:22:27,944 INFO L523 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:22:28,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 13:22:28,151 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:22:28,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:22:28,151 INFO L82 PathProgramCache]: Analyzing trace with hash 468829586, now seen corresponding path program 25 times [2021-05-02 13:22:28,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:22:28,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582184463] [2021-05-02 13:22:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:22:28,158 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:22:28,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711398225] [2021-05-02 13:22:28,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:22:28,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 13:22:28,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:22:28,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:22:28,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:22:28,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582184463] [2021-05-02 13:22:28,783 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:22:28,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711398225] [2021-05-02 13:22:28,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711398225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:22:28,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:22:28,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-05-02 13:22:28,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322432532] [2021-05-02 13:22:28,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 13:22:28,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:22:28,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 13:22:28,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-05-02 13:22:28,785 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:22:30,841 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-05-02 13:22:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 13:22:30,864 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-05-02 13:22:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:22:30,864 INFO L225 Difference]: With dead ends: 43 [2021-05-02 13:22:30,864 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 13:22:30,865 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 439.6ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-05-02 13:22:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 13:22:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 13:22:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-05-02 13:22:30,872 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2021-05-02 13:22:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:22:30,872 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-05-02 13:22:30,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-05-02 13:22:30,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 13:22:30,872 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:22:30,873 INFO L523 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:22:31,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 13:22:31,076 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:22:31,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:22:31,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1683310347, now seen corresponding path program 26 times [2021-05-02 13:22:31,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:22:31,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912717449] [2021-05-02 13:22:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:22:31,082 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:22:31,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775568859] [2021-05-02 13:22:31,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:31,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:22:31,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:22:31,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 13:22:31,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:22:31,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:22:31,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:22:31,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912717449] [2021-05-02 13:22:31,754 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:22:31,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775568859] [2021-05-02 13:22:31,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775568859] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:22:31,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:22:31,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-05-02 13:22:31,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50941461] [2021-05-02 13:22:31,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 13:22:31,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:22:31,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 13:22:31,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-05-02 13:22:31,756 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:22:43,963 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-05-02 13:22:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 13:22:43,992 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-02 13:22:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:22:43,993 INFO L225 Difference]: With dead ends: 44 [2021-05-02 13:22:43,993 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 13:22:43,993 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 497.8ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-05-02 13:22:43,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 13:22:43,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-02 13:22:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-05-02 13:22:43,995 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2021-05-02 13:22:43,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:22:43,995 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-05-02 13:22:43,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:43,996 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-05-02 13:22:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 13:22:43,996 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:22:43,996 INFO L523 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:22:44,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 13:22:44,197 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:22:44,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:22:44,197 INFO L82 PathProgramCache]: Analyzing trace with hash 677508274, now seen corresponding path program 27 times [2021-05-02 13:22:44,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:22:44,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62328930] [2021-05-02 13:22:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:22:44,204 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:22:44,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883155944] [2021-05-02 13:22:44,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:44,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-05-02 13:22:44,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:22:44,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 13:22:44,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:22:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:44,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:45,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:22:45,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:22:45,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62328930] [2021-05-02 13:22:45,029 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:22:45,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883155944] [2021-05-02 13:22:45,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883155944] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:22:45,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:22:45,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-05-02 13:22:45,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853257973] [2021-05-02 13:22:45,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 13:22:45,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:22:45,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 13:22:45,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-05-02 13:22:45,031 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:22:55,190 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-05-02 13:22:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 13:22:55,226 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-05-02 13:22:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:22:55,227 INFO L225 Difference]: With dead ends: 45 [2021-05-02 13:22:55,227 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 13:22:55,227 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 631.4ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-05-02 13:22:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 13:22:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-02 13:22:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-05-02 13:22:55,230 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2021-05-02 13:22:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:22:55,230 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-05-02 13:22:55,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:22:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-05-02 13:22:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 13:22:55,230 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:22:55,230 INFO L523 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:22:55,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 13:22:55,441 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:22:55,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:22:55,441 INFO L82 PathProgramCache]: Analyzing trace with hash -437584917, now seen corresponding path program 28 times [2021-05-02 13:22:55,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:22:55,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723304828] [2021-05-02 13:22:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:22:55,449 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:22:55,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109538971] [2021-05-02 13:22:55,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:22:55,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:22:55,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:22:55,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 13:22:55,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:22:55,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:55,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:56,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:56,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:56,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:56,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:56,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:56,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:22:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:22:56,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:22:56,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723304828] [2021-05-02 13:22:56,120 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:22:56,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109538971] [2021-05-02 13:22:56,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109538971] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:22:56,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:22:56,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-05-02 13:22:56,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502842150] [2021-05-02 13:22:56,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 13:22:56,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:22:56,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 13:22:56,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-05-02 13:22:56,121 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:23:04,750 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-05-02 13:23:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 13:23:04,751 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-02 13:23:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:23:04,752 INFO L225 Difference]: With dead ends: 46 [2021-05-02 13:23:04,752 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 13:23:04,752 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 511.5ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-05-02 13:23:04,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 13:23:04,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-02 13:23:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-05-02 13:23:04,755 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2021-05-02 13:23:04,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:23:04,755 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-05-02 13:23:04,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:04,755 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-05-02 13:23:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 13:23:04,755 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:23:04,755 INFO L523 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:23:04,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 13:23:04,957 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:23:04,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:23:04,958 INFO L82 PathProgramCache]: Analyzing trace with hash -645735470, now seen corresponding path program 29 times [2021-05-02 13:23:04,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:23:04,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194112417] [2021-05-02 13:23:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:23:04,970 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:23:04,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315322736] [2021-05-02 13:23:04,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:05,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-05-02 13:23:05,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:23:05,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 13:23:05,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:23:05,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:23:05,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:23:05,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194112417] [2021-05-02 13:23:05,725 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:23:05,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315322736] [2021-05-02 13:23:05,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315322736] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:23:05,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:23:05,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-05-02 13:23:05,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520802442] [2021-05-02 13:23:05,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 13:23:05,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:23:05,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 13:23:05,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 13:23:05,726 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:16,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:23:16,739 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-05-02 13:23:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 13:23:16,740 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-05-02 13:23:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:23:16,741 INFO L225 Difference]: With dead ends: 47 [2021-05-02 13:23:16,741 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 13:23:16,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 544.1ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 13:23:16,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 13:23:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 13:23:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-05-02 13:23:16,744 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2021-05-02 13:23:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:23:16,744 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-05-02 13:23:16,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-05-02 13:23:16,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 13:23:16,744 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:23:16,744 INFO L523 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:23:16,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:16,945 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:23:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:23:16,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1491531979, now seen corresponding path program 30 times [2021-05-02 13:23:16,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:23:16,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907543275] [2021-05-02 13:23:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:23:16,952 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:23:16,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050444814] [2021-05-02 13:23:16,952 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:17,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-05-02 13:23:17,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:23:17,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 13:23:17,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:23:17,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:23:17,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:23:17,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907543275] [2021-05-02 13:23:17,781 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:23:17,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050444814] [2021-05-02 13:23:17,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050444814] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:23:17,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:23:17,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-05-02 13:23:17,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854085264] [2021-05-02 13:23:17,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 13:23:17,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:23:17,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 13:23:17,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 13:23:17,782 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:23:25,931 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-05-02 13:23:25,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 13:23:25,932 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-02 13:23:25,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:23:25,932 INFO L225 Difference]: With dead ends: 48 [2021-05-02 13:23:25,932 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 13:23:25,933 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 583.5ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 13:23:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 13:23:25,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-02 13:23:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-05-02 13:23:25,935 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2021-05-02 13:23:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:23:25,935 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-05-02 13:23:25,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-05-02 13:23:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-02 13:23:25,936 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:23:25,936 INFO L523 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:23:26,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:26,136 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:23:26,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:23:26,137 INFO L82 PathProgramCache]: Analyzing trace with hash -972653838, now seen corresponding path program 31 times [2021-05-02 13:23:26,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:23:26,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122046083] [2021-05-02 13:23:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:23:26,144 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:23:26,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369442456] [2021-05-02 13:23:26,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:23:26,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 13:23:26,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:23:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:23:26,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:23:26,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122046083] [2021-05-02 13:23:26,895 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:23:26,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369442456] [2021-05-02 13:23:26,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369442456] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:23:26,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:23:26,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-05-02 13:23:26,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867545382] [2021-05-02 13:23:26,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 13:23:26,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:23:26,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 13:23:26,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 13:23:26,896 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:23:32,993 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-05-02 13:23:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 13:23:33,012 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-05-02 13:23:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:23:33,012 INFO L225 Difference]: With dead ends: 49 [2021-05-02 13:23:33,012 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 13:23:33,013 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 577.2ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 13:23:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 13:23:33,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-02 13:23:33,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-05-02 13:23:33,015 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2021-05-02 13:23:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:23:33,015 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-05-02 13:23:33,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-05-02 13:23:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 13:23:33,016 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:23:33,016 INFO L523 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:23:33,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-05-02 13:23:33,216 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:23:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:23:33,217 INFO L82 PathProgramCache]: Analyzing trace with hash -53002837, now seen corresponding path program 32 times [2021-05-02 13:23:33,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:23:33,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964207972] [2021-05-02 13:23:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:23:33,223 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:23:33,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018714612] [2021-05-02 13:23:33,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:33,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:23:33,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:23:33,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 13:23:33,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:23:33,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:33,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:34,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:23:34,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:23:34,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964207972] [2021-05-02 13:23:34,038 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:23:34,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018714612] [2021-05-02 13:23:34,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018714612] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:23:34,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:23:34,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-05-02 13:23:34,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317991313] [2021-05-02 13:23:34,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 13:23:34,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:23:34,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 13:23:34,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 13:23:34,039 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:38,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:23:38,120 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-05-02 13:23:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 13:23:38,148 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-02 13:23:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:23:38,148 INFO L225 Difference]: With dead ends: 50 [2021-05-02 13:23:38,149 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 13:23:38,149 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 635.3ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 13:23:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 13:23:38,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-05-02 13:23:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-05-02 13:23:38,151 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2021-05-02 13:23:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:23:38,151 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-05-02 13:23:38,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-05-02 13:23:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-02 13:23:38,152 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:23:38,152 INFO L523 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:23:38,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:38,353 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:23:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:23:38,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1608592878, now seen corresponding path program 33 times [2021-05-02 13:23:38,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:23:38,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837603880] [2021-05-02 13:23:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:23:38,360 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:23:38,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156988502] [2021-05-02 13:23:38,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:38,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 13:23:38,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:23:38,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 13:23:38,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:23:38,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:38,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:23:39,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:23:39,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837603880] [2021-05-02 13:23:39,253 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:23:39,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156988502] [2021-05-02 13:23:39,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156988502] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:23:39,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:23:39,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-05-02 13:23:39,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591207599] [2021-05-02 13:23:39,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 13:23:39,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:23:39,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 13:23:39,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 13:23:39,254 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:45,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:23:45,387 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-05-02 13:23:45,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 13:23:45,401 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-05-02 13:23:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:23:45,402 INFO L225 Difference]: With dead ends: 51 [2021-05-02 13:23:45,402 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 13:23:45,402 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 676.5ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 13:23:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 13:23:45,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-02 13:23:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-05-02 13:23:45,404 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2021-05-02 13:23:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:23:45,405 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-05-02 13:23:45,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-05-02 13:23:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 13:23:45,405 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:23:45,405 INFO L523 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:23:45,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 13:23:45,607 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:23:45,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:23:45,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1707723403, now seen corresponding path program 34 times [2021-05-02 13:23:45,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:23:45,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927740165] [2021-05-02 13:23:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:23:45,618 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:23:45,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709201813] [2021-05-02 13:23:45,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:45,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:23:45,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:23:45,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 13:23:45,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:23:45,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:23:46,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:23:46,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927740165] [2021-05-02 13:23:46,501 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:23:46,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709201813] [2021-05-02 13:23:46,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709201813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:23:46,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:23:46,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-05-02 13:23:46,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696154072] [2021-05-02 13:23:46,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 13:23:46,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:23:46,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 13:23:46,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 13:23:46,503 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:23:54,998 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-05-02 13:23:54,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 13:23:54,999 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-02 13:23:55,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:23:55,000 INFO L225 Difference]: With dead ends: 52 [2021-05-02 13:23:55,000 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 13:23:55,001 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 691.1ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 13:23:55,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 13:23:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-02 13:23:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-05-02 13:23:55,003 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2021-05-02 13:23:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:23:55,003 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-05-02 13:23:55,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:23:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-05-02 13:23:55,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-02 13:23:55,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:23:55,004 INFO L523 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:23:55,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:55,217 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:23:55,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:23:55,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1434313010, now seen corresponding path program 35 times [2021-05-02 13:23:55,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:23:55,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652357250] [2021-05-02 13:23:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:23:55,244 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:23:55,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230680212] [2021-05-02 13:23:55,245 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:23:55,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-05-02 13:23:55,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:23:55,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 13:23:55,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:23:55,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:55,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:23:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:23:56,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:23:56,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652357250] [2021-05-02 13:23:56,169 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:23:56,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230680212] [2021-05-02 13:23:56,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230680212] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:23:56,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:23:56,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2021-05-02 13:23:56,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234185112] [2021-05-02 13:23:56,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 13:23:56,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:23:56,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 13:23:56,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 13:23:56,171 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:24:00,294 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-05-02 13:24:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 13:24:00,316 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-05-02 13:24:00,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:24:00,317 INFO L225 Difference]: With dead ends: 53 [2021-05-02 13:24:00,317 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 13:24:00,317 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 725.9ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 13:24:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 13:24:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 13:24:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-05-02 13:24:00,323 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2021-05-02 13:24:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:24:00,323 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-05-02 13:24:00,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-05-02 13:24:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 13:24:00,324 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:24:00,324 INFO L523 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:24:00,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 13:24:00,524 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:24:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:24:00,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1548525419, now seen corresponding path program 36 times [2021-05-02 13:24:00,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:24:00,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305178584] [2021-05-02 13:24:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:24:00,532 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:24:00,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010095940] [2021-05-02 13:24:00,532 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:24:00,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 13:24:00,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:24:00,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 13:24:00,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:24:00,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:00,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:24:01,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:24:01,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305178584] [2021-05-02 13:24:01,561 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:24:01,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010095940] [2021-05-02 13:24:01,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010095940] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:24:01,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:24:01,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-05-02 13:24:01,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109547351] [2021-05-02 13:24:01,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 13:24:01,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:24:01,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 13:24:01,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 13:24:01,563 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:03,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:24:03,636 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-05-02 13:24:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 13:24:03,654 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-02 13:24:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:24:03,655 INFO L225 Difference]: With dead ends: 54 [2021-05-02 13:24:03,655 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 13:24:03,655 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 815.9ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 13:24:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 13:24:03,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-05-02 13:24:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-05-02 13:24:03,657 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2021-05-02 13:24:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:24:03,658 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-05-02 13:24:03,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-05-02 13:24:03,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-02 13:24:03,658 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:24:03,658 INFO L523 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:24:03,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 13:24:03,861 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:24:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:24:03,861 INFO L82 PathProgramCache]: Analyzing trace with hash 794142802, now seen corresponding path program 37 times [2021-05-02 13:24:03,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:24:03,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580296664] [2021-05-02 13:24:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:24:03,866 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:24:03,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575859283] [2021-05-02 13:24:03,867 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:24:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:24:03,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 13:24:03,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:24:03,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:03,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:24:04,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:24:04,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580296664] [2021-05-02 13:24:04,887 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:24:04,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575859283] [2021-05-02 13:24:04,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575859283] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:24:04,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:24:04,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-05-02 13:24:04,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119478794] [2021-05-02 13:24:04,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 13:24:04,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:24:04,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 13:24:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 13:24:04,888 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:24:11,688 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-05-02 13:24:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 13:24:11,703 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-05-02 13:24:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:24:11,704 INFO L225 Difference]: With dead ends: 55 [2021-05-02 13:24:11,704 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 13:24:11,704 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 832.7ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 13:24:11,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 13:24:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-02 13:24:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-05-02 13:24:11,706 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2021-05-02 13:24:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:24:11,707 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-05-02 13:24:11,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-05-02 13:24:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 13:24:11,707 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:24:11,707 INFO L523 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:24:11,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 13:24:11,913 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:24:11,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:24:11,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1116881845, now seen corresponding path program 38 times [2021-05-02 13:24:11,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:24:11,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969697043] [2021-05-02 13:24:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:24:11,922 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:24:11,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602116256] [2021-05-02 13:24:11,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:24:11,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:24:11,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:24:11,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 13:24:11,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:24:12,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:12,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:13,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:24:13,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:24:13,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969697043] [2021-05-02 13:24:13,010 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:24:13,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602116256] [2021-05-02 13:24:13,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602116256] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:24:13,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:24:13,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-05-02 13:24:13,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766923145] [2021-05-02 13:24:13,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 13:24:13,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:24:13,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 13:24:13,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 13:24:13,012 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:24:15,089 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-05-02 13:24:15,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 13:24:15,101 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-02 13:24:15,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:24:15,101 INFO L225 Difference]: With dead ends: 56 [2021-05-02 13:24:15,101 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 13:24:15,102 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 863.3ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 13:24:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 13:24:15,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-05-02 13:24:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:15,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-05-02 13:24:15,105 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2021-05-02 13:24:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:24:15,108 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-05-02 13:24:15,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-05-02 13:24:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 13:24:15,116 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:24:15,116 INFO L523 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:24:15,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 13:24:15,338 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:24:15,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:24:15,338 INFO L82 PathProgramCache]: Analyzing trace with hash -229103758, now seen corresponding path program 39 times [2021-05-02 13:24:15,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:24:15,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537112237] [2021-05-02 13:24:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:24:15,344 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:24:15,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987227131] [2021-05-02 13:24:15,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:24:15,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-05-02 13:24:15,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:24:15,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 13:24:15,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:24:15,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:15,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:24:16,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:24:16,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537112237] [2021-05-02 13:24:16,453 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:24:16,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987227131] [2021-05-02 13:24:16,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987227131] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:24:16,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:24:16,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2021-05-02 13:24:16,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789392452] [2021-05-02 13:24:16,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 13:24:16,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:24:16,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 13:24:16,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 13:24:16,454 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:24:20,559 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-05-02 13:24:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 13:24:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-05-02 13:24:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:24:20,571 INFO L225 Difference]: With dead ends: 57 [2021-05-02 13:24:20,572 INFO L226 Difference]: Without dead ends: 52 [2021-05-02 13:24:20,572 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 888.8ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 13:24:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-02 13:24:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-02 13:24:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-05-02 13:24:20,575 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2021-05-02 13:24:20,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:24:20,575 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-05-02 13:24:20,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:20,575 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-05-02 13:24:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 13:24:20,575 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:24:20,575 INFO L523 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:24:20,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 13:24:20,777 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:24:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:24:20,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1522213163, now seen corresponding path program 40 times [2021-05-02 13:24:20,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:24:20,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482352809] [2021-05-02 13:24:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:24:20,784 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:24:20,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740784204] [2021-05-02 13:24:20,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:24:20,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:24:20,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:24:20,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 13:24:20,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:24:20,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:20,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:24:21,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:24:21,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482352809] [2021-05-02 13:24:21,948 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:24:21,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740784204] [2021-05-02 13:24:21,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740784204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:24:21,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:24:21,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-05-02 13:24:21,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925519082] [2021-05-02 13:24:21,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 13:24:21,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:24:21,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 13:24:21,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 13:24:21,949 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:24:48,372 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-05-02 13:24:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 13:24:48,373 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-05-02 13:24:48,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:24:48,373 INFO L225 Difference]: With dead ends: 58 [2021-05-02 13:24:48,374 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 13:24:48,374 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 958.9ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 13:24:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 13:24:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-05-02 13:24:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-05-02 13:24:48,376 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2021-05-02 13:24:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:24:48,376 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-05-02 13:24:48,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-05-02 13:24:48,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-02 13:24:48,377 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:24:48,377 INFO L523 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:24:48,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:24:48,577 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:24:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:24:48,578 INFO L82 PathProgramCache]: Analyzing trace with hash -21537134, now seen corresponding path program 41 times [2021-05-02 13:24:48,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:24:48,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369915468] [2021-05-02 13:24:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:24:48,583 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:24:48,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522773047] [2021-05-02 13:24:48,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:24:48,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-05-02 13:24:48,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:24:48,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 13:24:48,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:24:48,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:48,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:24:49,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:24:49,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369915468] [2021-05-02 13:24:49,757 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:24:49,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522773047] [2021-05-02 13:24:49,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522773047] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:24:49,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:24:49,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-05-02 13:24:49,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983492794] [2021-05-02 13:24:49,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 13:24:49,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:24:49,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 13:24:49,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 13:24:49,758 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:24:51,836 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-05-02 13:24:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 13:24:51,850 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-05-02 13:24:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:24:51,850 INFO L225 Difference]: With dead ends: 59 [2021-05-02 13:24:51,850 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 13:24:51,851 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 961.2ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 13:24:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 13:24:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-05-02 13:24:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-05-02 13:24:51,853 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2021-05-02 13:24:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:24:51,853 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-05-02 13:24:51,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:24:51,853 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-05-02 13:24:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 13:24:51,853 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:24:51,853 INFO L523 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:24:52,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:24:52,054 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:24:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:24:52,054 INFO L82 PathProgramCache]: Analyzing trace with hash -633156085, now seen corresponding path program 42 times [2021-05-02 13:24:52,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:24:52,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711137645] [2021-05-02 13:24:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:24:52,071 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:24:52,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622811009] [2021-05-02 13:24:52,072 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:24:52,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-05-02 13:24:52,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:24:52,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 13:24:52,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:24:52,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:52,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:24:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:24:53,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:24:53,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711137645] [2021-05-02 13:24:53,365 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:24:53,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622811009] [2021-05-02 13:24:53,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622811009] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:24:53,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:24:53,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-05-02 13:24:53,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561956137] [2021-05-02 13:24:53,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 13:24:53,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:24:53,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 13:24:53,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 13:24:53,367 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:25:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:25:16,197 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-05-02 13:25:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 13:25:16,198 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-02 13:25:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:25:16,199 INFO L225 Difference]: With dead ends: 60 [2021-05-02 13:25:16,199 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 13:25:16,199 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1026.9ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 13:25:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 13:25:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-05-02 13:25:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:25:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2021-05-02 13:25:16,201 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2021-05-02 13:25:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:25:16,201 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2021-05-02 13:25:16,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:25:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2021-05-02 13:25:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 13:25:16,202 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:25:16,202 INFO L523 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:25:16,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:25:16,409 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:25:16,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:25:16,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1881492914, now seen corresponding path program 43 times [2021-05-02 13:25:16,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:25:16,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243564399] [2021-05-02 13:25:16,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:25:16,415 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:25:16,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381886373] [2021-05-02 13:25:16,416 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:25:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:25:16,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 13:25:16,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:25:16,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:16,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:25:17,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:25:17,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243564399] [2021-05-02 13:25:17,717 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:25:17,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381886373] [2021-05-02 13:25:17,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381886373] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:25:17,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:25:17,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2021-05-02 13:25:17,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760236568] [2021-05-02 13:25:17,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 13:25:17,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:25:17,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 13:25:17,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 13:25:17,719 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:25:32,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:25:32,255 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-05-02 13:25:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 13:25:32,256 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-05-02 13:25:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:25:32,257 INFO L225 Difference]: With dead ends: 61 [2021-05-02 13:25:32,257 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 13:25:32,257 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1089.2ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 13:25:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 13:25:32,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 13:25:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:25:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-05-02 13:25:32,260 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2021-05-02 13:25:32,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:25:32,260 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-05-02 13:25:32,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:25:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-05-02 13:25:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 13:25:32,260 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:25:32,260 INFO L523 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:25:32,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-02 13:25:32,461 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:25:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:25:32,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1768766741, now seen corresponding path program 44 times [2021-05-02 13:25:32,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:25:32,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97103602] [2021-05-02 13:25:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:25:32,469 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:25:32,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349086264] [2021-05-02 13:25:32,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:25:32,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:25:32,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:25:32,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 13:25:32,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:25:32,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:32,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:25:33,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:25:33,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97103602] [2021-05-02 13:25:33,891 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:25:33,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349086264] [2021-05-02 13:25:33,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349086264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:25:33,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:25:33,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2021-05-02 13:25:33,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157492617] [2021-05-02 13:25:33,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 13:25:33,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:25:33,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 13:25:33,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 13:25:33,892 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:25:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:25:58,545 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-05-02 13:25:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 13:25:58,547 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-02 13:25:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:25:58,547 INFO L225 Difference]: With dead ends: 62 [2021-05-02 13:25:58,547 INFO L226 Difference]: Without dead ends: 57 [2021-05-02 13:25:58,548 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1160.5ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 13:25:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-02 13:25:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-05-02 13:25:58,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:25:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-05-02 13:25:58,550 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2021-05-02 13:25:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:25:58,550 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-05-02 13:25:58,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:25:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-05-02 13:25:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-02 13:25:58,551 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:25:58,551 INFO L523 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:25:58,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 13:25:58,752 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:25:58,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:25:58,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1037300946, now seen corresponding path program 45 times [2021-05-02 13:25:58,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:25:58,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125946503] [2021-05-02 13:25:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:25:58,758 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:25:58,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956079029] [2021-05-02 13:25:58,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:25:58,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-05-02 13:25:58,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:25:58,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 13:25:58,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:25:58,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:58,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:25:59,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:00,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:00,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:00,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:00,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:00,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:00,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:00,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:26:00,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:26:00,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125946503] [2021-05-02 13:26:00,215 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:26:00,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956079029] [2021-05-02 13:26:00,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956079029] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:26:00,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:26:00,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2021-05-02 13:26:00,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810657470] [2021-05-02 13:26:00,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 13:26:00,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:26:00,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 13:26:00,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 13:26:00,216 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:26:14,489 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-05-02 13:26:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 13:26:14,509 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-05-02 13:26:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:26:14,510 INFO L225 Difference]: With dead ends: 63 [2021-05-02 13:26:14,510 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 13:26:14,510 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1218.3ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 13:26:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 13:26:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-02 13:26:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-05-02 13:26:14,525 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2021-05-02 13:26:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:26:14,526 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-05-02 13:26:14,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-05-02 13:26:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 13:26:14,526 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:26:14,526 INFO L523 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:26:14,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 13:26:14,733 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:26:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:26:14,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2126053323, now seen corresponding path program 46 times [2021-05-02 13:26:14,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:26:14,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849451422] [2021-05-02 13:26:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:26:14,740 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:26:14,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628950182] [2021-05-02 13:26:14,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:26:14,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:26:14,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:26:14,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 13:26:14,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:26:14,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:14,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:15,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:16,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:16,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:16,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:16,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:16,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:16,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:16,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:26:16,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:26:16,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849451422] [2021-05-02 13:26:16,176 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:26:16,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628950182] [2021-05-02 13:26:16,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628950182] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:26:16,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:26:16,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-05-02 13:26:16,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391230072] [2021-05-02 13:26:16,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 13:26:16,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:26:16,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 13:26:16,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 13:26:16,177 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:26:26,370 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-05-02 13:26:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 13:26:26,384 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-02 13:26:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:26:26,385 INFO L225 Difference]: With dead ends: 64 [2021-05-02 13:26:26,385 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 13:26:26,385 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1196.1ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 13:26:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 13:26:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-05-02 13:26:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-05-02 13:26:26,388 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2021-05-02 13:26:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:26:26,388 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-05-02 13:26:26,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-05-02 13:26:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-02 13:26:26,389 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:26:26,389 INFO L523 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:26:26,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:26:26,593 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:26:26,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:26:26,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1517638642, now seen corresponding path program 47 times [2021-05-02 13:26:26,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:26:26,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794560409] [2021-05-02 13:26:26,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:26:26,601 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:26:26,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738163996] [2021-05-02 13:26:26,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:26:26,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-05-02 13:26:26,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:26:26,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 13:26:26,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:26:26,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:26,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:27,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:28,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:28,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:28,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:28,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:28,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:28,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:28,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:26:28,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:26:28,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794560409] [2021-05-02 13:26:28,189 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:26:28,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738163996] [2021-05-02 13:26:28,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738163996] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:26:28,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:26:28,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-05-02 13:26:28,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681220623] [2021-05-02 13:26:28,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 13:26:28,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:26:28,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 13:26:28,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 13:26:28,191 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:26:40,272 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-05-02 13:26:40,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 13:26:40,273 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-05-02 13:26:40,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:26:40,274 INFO L225 Difference]: With dead ends: 65 [2021-05-02 13:26:40,274 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 13:26:40,274 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1289.9ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 13:26:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 13:26:40,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 13:26:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-05-02 13:26:40,277 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2021-05-02 13:26:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:26:40,277 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-05-02 13:26:40,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-05-02 13:26:40,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 13:26:40,278 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:26:40,278 INFO L523 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:26:40,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 13:26:40,493 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:26:40,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:26:40,493 INFO L82 PathProgramCache]: Analyzing trace with hash -163347285, now seen corresponding path program 48 times [2021-05-02 13:26:40,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:26:40,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104650387] [2021-05-02 13:26:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:26:40,501 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:26:40,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387974848] [2021-05-02 13:26:40,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:26:40,624 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 13:26:40,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:26:40,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 13:26:40,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:26:40,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:40,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:41,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:42,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:42,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:42,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:42,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:42,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:26:42,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:26:42,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104650387] [2021-05-02 13:26:42,126 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:26:42,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387974848] [2021-05-02 13:26:42,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387974848] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:26:42,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:26:42,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2021-05-02 13:26:42,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65365601] [2021-05-02 13:26:42,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 13:26:42,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:26:42,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 13:26:42,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 13:26:42,128 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:26:46,248 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-05-02 13:26:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 13:26:46,275 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-05-02 13:26:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:26:46,278 INFO L225 Difference]: With dead ends: 66 [2021-05-02 13:26:46,278 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 13:26:46,279 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1313.1ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 13:26:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 13:26:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-05-02 13:26:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 56 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2021-05-02 13:26:46,281 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2021-05-02 13:26:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:26:46,282 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2021-05-02 13:26:46,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2021-05-02 13:26:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-02 13:26:46,282 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:26:46,282 INFO L523 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:26:46,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 13:26:46,494 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:26:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:26:46,494 INFO L82 PathProgramCache]: Analyzing trace with hash -734303470, now seen corresponding path program 49 times [2021-05-02 13:26:46,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:26:46,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555145486] [2021-05-02 13:26:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:26:46,501 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:26:46,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618402412] [2021-05-02 13:26:46,501 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:26:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:26:46,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 13:26:46,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:26:46,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:46,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:47,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:48,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:48,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:48,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:48,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:48,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:26:48,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:26:48,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555145486] [2021-05-02 13:26:48,140 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:26:48,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618402412] [2021-05-02 13:26:48,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618402412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:26:48,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:26:48,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2021-05-02 13:26:48,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704991332] [2021-05-02 13:26:48,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 13:26:48,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:26:48,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 13:26:48,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 13:26:48,141 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:26:57,025 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-05-02 13:26:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 13:26:57,031 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2021-05-02 13:26:57,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:26:57,031 INFO L225 Difference]: With dead ends: 67 [2021-05-02 13:26:57,031 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 13:26:57,032 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1359.9ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 13:26:57,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 13:26:57,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-05-02 13:26:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-05-02 13:26:57,034 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2021-05-02 13:26:57,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:26:57,034 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-05-02 13:26:57,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:26:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-05-02 13:26:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 13:26:57,035 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:26:57,035 INFO L523 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:26:57,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 13:26:57,245 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:26:57,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:26:57,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1254076021, now seen corresponding path program 50 times [2021-05-02 13:26:57,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:26:57,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299621940] [2021-05-02 13:26:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:26:57,253 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:26:57,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113845505] [2021-05-02 13:26:57,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:26:57,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:26:57,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:26:57,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 13:26:57,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:26:57,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:57,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:26:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:26:58,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:26:58,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299621940] [2021-05-02 13:26:58,953 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:26:58,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113845505] [2021-05-02 13:26:58,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113845505] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:26:58,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:26:58,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2021-05-02 13:26:58,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942232572] [2021-05-02 13:26:58,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 13:26:58,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:26:58,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 13:26:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 13:26:58,954 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:03,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:27:03,070 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-05-02 13:27:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 13:27:03,089 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-02 13:27:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:27:03,090 INFO L225 Difference]: With dead ends: 68 [2021-05-02 13:27:03,090 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 13:27:03,091 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1432.9ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 13:27:03,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 13:27:03,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-05-02 13:27:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2021-05-02 13:27:03,093 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2021-05-02 13:27:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:27:03,093 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2021-05-02 13:27:03,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2021-05-02 13:27:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-05-02 13:27:03,094 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:27:03,094 INFO L523 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:27:03,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-05-02 13:27:03,296 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:27:03,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:27:03,296 INFO L82 PathProgramCache]: Analyzing trace with hash -187155918, now seen corresponding path program 51 times [2021-05-02 13:27:03,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:27:03,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011006992] [2021-05-02 13:27:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:27:03,305 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:27:03,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465232770] [2021-05-02 13:27:03,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:03,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-05-02 13:27:03,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:27:03,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 13:27:03,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:27:03,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:03,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:04,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:05,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:27:05,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:27:05,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011006992] [2021-05-02 13:27:05,050 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:27:05,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465232770] [2021-05-02 13:27:05,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465232770] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:27:05,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:27:05,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2021-05-02 13:27:05,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388307597] [2021-05-02 13:27:05,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 13:27:05,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:27:05,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 13:27:05,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 13:27:05,051 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:27:09,199 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-05-02 13:27:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 13:27:09,217 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-05-02 13:27:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:27:09,217 INFO L225 Difference]: With dead ends: 69 [2021-05-02 13:27:09,217 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 13:27:09,218 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1441.6ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 13:27:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 13:27:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 13:27:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-05-02 13:27:09,221 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2021-05-02 13:27:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:27:09,221 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-05-02 13:27:09,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-05-02 13:27:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 13:27:09,221 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:27:09,222 INFO L523 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:27:09,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:09,439 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:27:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:27:09,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1472371093, now seen corresponding path program 52 times [2021-05-02 13:27:09,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:27:09,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520858033] [2021-05-02 13:27:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:27:09,447 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:27:09,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122695914] [2021-05-02 13:27:09,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:09,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:27:09,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:27:09,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 13:27:09,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:27:09,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:09,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:10,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:27:11,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:27:11,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520858033] [2021-05-02 13:27:11,247 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:27:11,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122695914] [2021-05-02 13:27:11,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122695914] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:27:11,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:27:11,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2021-05-02 13:27:11,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108842951] [2021-05-02 13:27:11,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 13:27:11,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:27:11,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 13:27:11,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 13:27:11,248 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:27:13,370 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-05-02 13:27:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 13:27:13,389 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-02 13:27:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:27:13,390 INFO L225 Difference]: With dead ends: 70 [2021-05-02 13:27:13,390 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 13:27:13,390 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1526.9ms TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 13:27:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 13:27:13,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-02 13:27:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2021-05-02 13:27:13,393 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2021-05-02 13:27:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:27:13,393 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2021-05-02 13:27:13,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2021-05-02 13:27:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 13:27:13,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:27:13,394 INFO L523 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:27:13,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 13:27:13,598 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:27:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:27:13,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1635631442, now seen corresponding path program 53 times [2021-05-02 13:27:13,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:27:13,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717313743] [2021-05-02 13:27:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:27:13,607 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:27:13,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067159059] [2021-05-02 13:27:13,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:13,683 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-05-02 13:27:13,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:27:13,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 13:27:13,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:27:13,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:13,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:14,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:27:15,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:27:15,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717313743] [2021-05-02 13:27:15,431 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:27:15,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067159059] [2021-05-02 13:27:15,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067159059] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:27:15,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:27:15,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2021-05-02 13:27:15,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336150282] [2021-05-02 13:27:15,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 13:27:15,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:27:15,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 13:27:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 13:27:15,433 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:21,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:27:21,297 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-05-02 13:27:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 13:27:21,298 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-05-02 13:27:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:27:21,298 INFO L225 Difference]: With dead ends: 71 [2021-05-02 13:27:21,298 INFO L226 Difference]: Without dead ends: 66 [2021-05-02 13:27:21,299 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1544.5ms TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 13:27:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-02 13:27:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-02 13:27:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2021-05-02 13:27:21,301 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2021-05-02 13:27:21,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:27:21,301 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2021-05-02 13:27:21,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:21,301 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2021-05-02 13:27:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 13:27:21,302 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:27:21,302 INFO L523 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:27:21,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-02 13:27:21,503 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:27:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:27:21,503 INFO L82 PathProgramCache]: Analyzing trace with hash -800537781, now seen corresponding path program 54 times [2021-05-02 13:27:21,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:27:21,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800582003] [2021-05-02 13:27:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:27:21,511 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:27:21,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610417442] [2021-05-02 13:27:21,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:21,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-05-02 13:27:21,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:27:21,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 13:27:21,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:27:21,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:21,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:22,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:27:23,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:27:23,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800582003] [2021-05-02 13:27:23,445 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:27:23,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610417442] [2021-05-02 13:27:23,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610417442] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:27:23,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:27:23,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2021-05-02 13:27:23,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925219022] [2021-05-02 13:27:23,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 13:27:23,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:27:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 13:27:23,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 13:27:23,446 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:27:25,570 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-05-02 13:27:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 13:27:25,616 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-02 13:27:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:27:25,617 INFO L225 Difference]: With dead ends: 72 [2021-05-02 13:27:25,617 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 13:27:25,617 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1624.4ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 13:27:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 13:27:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-05-02 13:27:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-05-02 13:27:25,619 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2021-05-02 13:27:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:27:25,619 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-05-02 13:27:25,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-05-02 13:27:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-02 13:27:25,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:27:25,620 INFO L523 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:27:25,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:25,826 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:27:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:27:25,826 INFO L82 PathProgramCache]: Analyzing trace with hash 987627634, now seen corresponding path program 55 times [2021-05-02 13:27:25,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:27:25,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115370251] [2021-05-02 13:27:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:27:25,834 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:27:25,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508498382] [2021-05-02 13:27:25,835 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:27:25,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 13:27:25,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:27:25,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:25,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:25,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:25,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:25,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:25,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:25,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:25,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:25,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:25,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:26,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:27:27,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:27:27,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115370251] [2021-05-02 13:27:27,829 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:27:27,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508498382] [2021-05-02 13:27:27,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508498382] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:27:27,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:27:27,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2021-05-02 13:27:27,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46160682] [2021-05-02 13:27:27,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 13:27:27,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:27:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 13:27:27,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 13:27:27,830 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:27:31,212 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-05-02 13:27:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 13:27:31,218 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-05-02 13:27:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:27:31,219 INFO L225 Difference]: With dead ends: 73 [2021-05-02 13:27:31,219 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 13:27:31,219 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1706.6ms TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 13:27:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 13:27:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-05-02 13:27:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-05-02 13:27:31,221 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2021-05-02 13:27:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:27:31,221 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-05-02 13:27:31,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-05-02 13:27:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 13:27:31,221 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:27:31,221 INFO L523 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:27:31,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-02 13:27:31,422 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:27:31,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:27:31,422 INFO L82 PathProgramCache]: Analyzing trace with hash 586180651, now seen corresponding path program 56 times [2021-05-02 13:27:31,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:27:31,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972798208] [2021-05-02 13:27:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:27:31,429 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:27:31,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585174005] [2021-05-02 13:27:31,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:31,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:27:31,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:27:31,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 13:27:31,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:27:31,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:31,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:32,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:27:33,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:27:33,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972798208] [2021-05-02 13:27:33,457 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:27:33,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585174005] [2021-05-02 13:27:33,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585174005] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:27:33,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:27:33,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2021-05-02 13:27:33,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364341378] [2021-05-02 13:27:33,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 13:27:33,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:27:33,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 13:27:33,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 13:27:33,458 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:27:43,713 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-05-02 13:27:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 13:27:43,729 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-05-02 13:27:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:27:43,730 INFO L225 Difference]: With dead ends: 74 [2021-05-02 13:27:43,730 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 13:27:43,730 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1758.8ms TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 13:27:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 13:27:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-05-02 13:27:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.015625) internal successors, (65), 64 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2021-05-02 13:27:43,732 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2021-05-02 13:27:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:27:43,732 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2021-05-02 13:27:43,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2021-05-02 13:27:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 13:27:43,733 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:27:43,733 INFO L523 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:27:43,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:43,933 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:27:43,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:27:43,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1026226066, now seen corresponding path program 57 times [2021-05-02 13:27:43,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:27:43,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902651222] [2021-05-02 13:27:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:27:43,941 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:27:43,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025174724] [2021-05-02 13:27:43,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:44,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 13:27:44,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:27:44,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 13:27:44,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:27:44,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:44,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:45,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:46,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:46,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:27:46,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:27:46,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902651222] [2021-05-02 13:27:46,090 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:27:46,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025174724] [2021-05-02 13:27:46,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025174724] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:27:46,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:27:46,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2021-05-02 13:27:46,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751888814] [2021-05-02 13:27:46,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 13:27:46,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:27:46,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 13:27:46,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 13:27:46,092 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:27:48,262 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-05-02 13:27:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 13:27:48,293 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-05-02 13:27:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:27:48,293 INFO L225 Difference]: With dead ends: 75 [2021-05-02 13:27:48,293 INFO L226 Difference]: Without dead ends: 70 [2021-05-02 13:27:48,293 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1842.8ms TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 13:27:48,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-02 13:27:48,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-05-02 13:27:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-05-02 13:27:48,296 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2021-05-02 13:27:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:27:48,296 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-05-02 13:27:48,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:27:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-05-02 13:27:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 13:27:48,296 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:27:48,296 INFO L523 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:27:48,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 13:27:48,497 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:27:48,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:27:48,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1782732043, now seen corresponding path program 58 times [2021-05-02 13:27:48,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:27:48,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266665796] [2021-05-02 13:27:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:27:48,505 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:27:48,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626473595] [2021-05-02 13:27:48,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:27:48,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:27:48,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:27:48,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 13:27:48,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:27:48,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:48,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:49,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:27:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:27:50,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:27:50,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266665796] [2021-05-02 13:27:50,703 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:27:50,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626473595] [2021-05-02 13:27:50,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626473595] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:27:50,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:27:50,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2021-05-02 13:27:50,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449810903] [2021-05-02 13:27:50,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 13:27:50,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:27:50,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 13:27:50,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 13:27:50,704 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:02,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:28:02,245 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2021-05-02 13:28:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 13:28:02,253 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-02 13:28:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:28:02,254 INFO L225 Difference]: With dead ends: 76 [2021-05-02 13:28:02,254 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 13:28:02,254 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1916.2ms TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 13:28:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 13:28:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-05-02 13:28:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-05-02 13:28:02,256 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2021-05-02 13:28:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:28:02,256 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-05-02 13:28:02,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-05-02 13:28:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-02 13:28:02,257 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:28:02,257 INFO L523 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:28:02,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 13:28:02,458 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:28:02,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:28:02,458 INFO L82 PathProgramCache]: Analyzing trace with hash -535386446, now seen corresponding path program 59 times [2021-05-02 13:28:02,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:28:02,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905410474] [2021-05-02 13:28:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:28:02,466 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:28:02,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393990316] [2021-05-02 13:28:02,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:28:02,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-05-02 13:28:02,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:28:02,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 13:28:02,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:28:02,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:02,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:03,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:28:04,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:28:04,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905410474] [2021-05-02 13:28:04,925 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:28:04,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393990316] [2021-05-02 13:28:04,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393990316] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:28:04,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:28:04,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2021-05-02 13:28:04,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836372471] [2021-05-02 13:28:04,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 13:28:04,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:28:04,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 13:28:04,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 13:28:04,926 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:28:23,683 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2021-05-02 13:28:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 13:28:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2021-05-02 13:28:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:28:23,685 INFO L225 Difference]: With dead ends: 77 [2021-05-02 13:28:23,685 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 13:28:23,686 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2142.1ms TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 13:28:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 13:28:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-02 13:28:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-05-02 13:28:23,688 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2021-05-02 13:28:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:28:23,688 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-05-02 13:28:23,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-05-02 13:28:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 13:28:23,689 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:28:23,689 INFO L523 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:28:23,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 13:28:23,897 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:28:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:28:23,897 INFO L82 PathProgramCache]: Analyzing trace with hash 617384427, now seen corresponding path program 60 times [2021-05-02 13:28:23,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:28:23,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114893022] [2021-05-02 13:28:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:28:23,905 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:28:23,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522792776] [2021-05-02 13:28:23,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:28:24,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 13:28:24,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:28:24,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 13:28:24,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:28:24,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:24,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:25,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:28:26,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:28:26,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114893022] [2021-05-02 13:28:26,320 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:28:26,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522792776] [2021-05-02 13:28:26,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522792776] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:28:26,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:28:26,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2021-05-02 13:28:26,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090046123] [2021-05-02 13:28:26,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 13:28:26,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:28:26,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 13:28:26,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 13:28:26,322 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 64 states, 64 states have (on average 1.046875) internal successors, (67), 63 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:28:40,120 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2021-05-02 13:28:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 13:28:40,140 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.046875) internal successors, (67), 63 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-02 13:28:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:28:40,141 INFO L225 Difference]: With dead ends: 78 [2021-05-02 13:28:40,141 INFO L226 Difference]: Without dead ends: 73 [2021-05-02 13:28:40,141 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2065.1ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 13:28:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-02 13:28:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-05-02 13:28:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-05-02 13:28:40,143 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2021-05-02 13:28:40,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:28:40,143 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-05-02 13:28:40,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.046875) internal successors, (67), 63 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:40,143 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-05-02 13:28:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-02 13:28:40,144 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:28:40,144 INFO L523 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:28:40,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:28:40,353 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:28:40,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:28:40,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1993543122, now seen corresponding path program 61 times [2021-05-02 13:28:40,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:28:40,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813304192] [2021-05-02 13:28:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:28:40,361 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:28:40,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392586931] [2021-05-02 13:28:40,361 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:28:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:28:40,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 13:28:40,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:28:40,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:40,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:41,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:28:42,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:28:42,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813304192] [2021-05-02 13:28:42,784 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:28:42,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392586931] [2021-05-02 13:28:42,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392586931] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:28:42,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:28:42,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2021-05-02 13:28:42,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839781294] [2021-05-02 13:28:42,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 13:28:42,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:28:42,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 13:28:42,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 13:28:42,790 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 65 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 64 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:28:53,023 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-05-02 13:28:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 13:28:53,047 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 64 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-05-02 13:28:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:28:53,048 INFO L225 Difference]: With dead ends: 79 [2021-05-02 13:28:53,048 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 13:28:53,048 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2117.0ms TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 13:28:53,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 13:28:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 13:28:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-05-02 13:28:53,051 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2021-05-02 13:28:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:28:53,052 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-05-02 13:28:53,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 64 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:28:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-05-02 13:28:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 13:28:53,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:28:53,052 INFO L523 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:28:53,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:28:53,253 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:28:53,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:28:53,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1704789707, now seen corresponding path program 62 times [2021-05-02 13:28:53,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:28:53,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668880036] [2021-05-02 13:28:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:28:53,261 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:28:53,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857831594] [2021-05-02 13:28:53,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:28:53,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:28:53,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:28:53,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-02 13:28:53,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:28:53,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:53,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:54,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:28:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:28:55,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:28:55,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668880036] [2021-05-02 13:28:55,756 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:28:55,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857831594] [2021-05-02 13:28:55,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857831594] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:28:55,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:28:55,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2021-05-02 13:28:55,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341704288] [2021-05-02 13:28:55,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 13:28:55,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:28:55,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 13:28:55,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 13:28:55,757 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 66 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:04,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:29:04,774 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-05-02 13:29:04,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 13:29:04,775 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-02 13:29:04,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:29:04,776 INFO L225 Difference]: With dead ends: 80 [2021-05-02 13:29:04,776 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 13:29:04,776 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2197.0ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 13:29:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 13:29:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-05-02 13:29:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2021-05-02 13:29:04,778 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2021-05-02 13:29:04,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:29:04,779 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2021-05-02 13:29:04,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2021-05-02 13:29:04,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-02 13:29:04,780 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:29:04,780 INFO L523 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:29:04,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:29:04,987 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:29:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:29:04,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1343368434, now seen corresponding path program 63 times [2021-05-02 13:29:04,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:29:04,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461230569] [2021-05-02 13:29:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:29:04,993 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:29:04,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087692450] [2021-05-02 13:29:04,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:29:05,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-05-02 13:29:05,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:29:05,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 13:29:05,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:29:05,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:05,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:06,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:29:07,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:29:07,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461230569] [2021-05-02 13:29:07,671 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:29:07,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087692450] [2021-05-02 13:29:07,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087692450] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:29:07,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:29:07,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2021-05-02 13:29:07,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153357086] [2021-05-02 13:29:07,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 13:29:07,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:29:07,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 13:29:07,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 13:29:07,673 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 67 states, 67 states have (on average 1.044776119402985) internal successors, (70), 66 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:29:18,657 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-05-02 13:29:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 13:29:18,661 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.044776119402985) internal successors, (70), 66 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2021-05-02 13:29:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:29:18,662 INFO L225 Difference]: With dead ends: 81 [2021-05-02 13:29:18,662 INFO L226 Difference]: Without dead ends: 76 [2021-05-02 13:29:18,662 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2301.4ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 13:29:18,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-02 13:29:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-05-02 13:29:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2021-05-02 13:29:18,665 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2021-05-02 13:29:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:29:18,665 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2021-05-02 13:29:18,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 1.044776119402985) internal successors, (70), 66 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2021-05-02 13:29:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 13:29:18,666 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:29:18,666 INFO L523 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:29:18,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:29:18,889 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:29:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:29:18,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1270756437, now seen corresponding path program 64 times [2021-05-02 13:29:18,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:29:18,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096263871] [2021-05-02 13:29:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:29:18,897 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:29:18,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355149240] [2021-05-02 13:29:18,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:29:18,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:29:18,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:29:18,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 13:29:18,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:29:19,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:19,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:20,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:29:21,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:29:21,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096263871] [2021-05-02 13:29:21,614 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:29:21,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355149240] [2021-05-02 13:29:21,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355149240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:29:21,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:29:21,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2021-05-02 13:29:21,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948628734] [2021-05-02 13:29:21,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 13:29:21,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:29:21,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 13:29:21,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 13:29:21,615 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 68 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 67 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:29:27,841 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2021-05-02 13:29:27,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 13:29:27,888 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 67 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-05-02 13:29:27,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:29:27,888 INFO L225 Difference]: With dead ends: 82 [2021-05-02 13:29:27,888 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 13:29:27,889 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2382.0ms TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 13:29:27,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 13:29:27,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-05-02 13:29:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 72 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2021-05-02 13:29:27,891 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2021-05-02 13:29:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:29:27,891 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2021-05-02 13:29:27,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 67 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2021-05-02 13:29:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-02 13:29:27,891 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:29:27,891 INFO L523 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:29:28,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-05-02 13:29:28,092 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:29:28,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:29:28,092 INFO L82 PathProgramCache]: Analyzing trace with hash -704248814, now seen corresponding path program 65 times [2021-05-02 13:29:28,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:29:28,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225142055] [2021-05-02 13:29:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:29:28,101 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:29:28,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363101473] [2021-05-02 13:29:28,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:29:28,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-02 13:29:28,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:29:28,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 13:29:28,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:29:28,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:28,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:29,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:29:30,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:29:30,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225142055] [2021-05-02 13:29:30,893 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:29:30,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363101473] [2021-05-02 13:29:30,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363101473] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:29:30,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:29:30,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2021-05-02 13:29:30,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12590488] [2021-05-02 13:29:30,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 13:29:30,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:29:30,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 13:29:30,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 13:29:30,894 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 69 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 68 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:29:41,127 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-05-02 13:29:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 13:29:41,146 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 68 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2021-05-02 13:29:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:29:41,147 INFO L225 Difference]: With dead ends: 83 [2021-05-02 13:29:41,147 INFO L226 Difference]: Without dead ends: 78 [2021-05-02 13:29:41,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2434.4ms TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 13:29:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-02 13:29:41,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-05-02 13:29:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:41,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-05-02 13:29:41,150 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2021-05-02 13:29:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:29:41,150 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-05-02 13:29:41,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 68 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-05-02 13:29:41,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 13:29:41,151 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:29:41,151 INFO L523 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:29:41,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 13:29:41,365 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:29:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:29:41,365 INFO L82 PathProgramCache]: Analyzing trace with hash -322381685, now seen corresponding path program 66 times [2021-05-02 13:29:41,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:29:41,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215142532] [2021-05-02 13:29:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:29:41,374 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:29:41,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467377972] [2021-05-02 13:29:41,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:29:41,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-05-02 13:29:41,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:29:41,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 13:29:41,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:29:41,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:41,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:42,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:43,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:44,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:44,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:44,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:44,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:44,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:44,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:44,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:29:44,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:29:44,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215142532] [2021-05-02 13:29:44,218 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:29:44,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467377972] [2021-05-02 13:29:44,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467377972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:29:44,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:29:44,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2021-05-02 13:29:44,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121577048] [2021-05-02 13:29:44,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 13:29:44,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:29:44,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 13:29:44,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 13:29:44,220 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:29:48,430 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-05-02 13:29:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 13:29:48,447 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-02 13:29:48,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:29:48,448 INFO L225 Difference]: With dead ends: 84 [2021-05-02 13:29:48,448 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 13:29:48,448 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2455.2ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 13:29:48,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 13:29:48,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-05-02 13:29:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 74 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2021-05-02 13:29:48,451 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2021-05-02 13:29:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:29:48,451 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2021-05-02 13:29:48,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2021-05-02 13:29:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 13:29:48,452 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:29:48,452 INFO L523 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:29:48,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:29:48,665 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:29:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:29:48,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1369402574, now seen corresponding path program 67 times [2021-05-02 13:29:48,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:29:48,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947713591] [2021-05-02 13:29:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:29:48,672 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:29:48,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603764006] [2021-05-02 13:29:48,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:29:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:29:48,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 13:29:48,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:29:48,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:48,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:49,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:50,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:29:51,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:29:51,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947713591] [2021-05-02 13:29:51,571 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:29:51,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603764006] [2021-05-02 13:29:51,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603764006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:29:51,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:29:51,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2021-05-02 13:29:51,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231239202] [2021-05-02 13:29:51,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 13:29:51,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:29:51,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 13:29:51,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 13:29:51,573 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:29:57,762 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2021-05-02 13:29:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 13:29:57,779 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2021-05-02 13:29:57,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:29:57,780 INFO L225 Difference]: With dead ends: 85 [2021-05-02 13:29:57,780 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 13:29:57,781 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2570.5ms TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 13:29:57,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 13:29:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-02 13:29:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-05-02 13:29:57,783 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2021-05-02 13:29:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:29:57,784 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-05-02 13:29:57,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:29:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-05-02 13:29:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 13:29:57,784 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:29:57,784 INFO L523 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:29:57,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 13:29:57,985 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:29:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:29:57,985 INFO L82 PathProgramCache]: Analyzing trace with hash 532688235, now seen corresponding path program 68 times [2021-05-02 13:29:57,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:29:57,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148539905] [2021-05-02 13:29:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:29:57,993 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:29:57,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371928448] [2021-05-02 13:29:57,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:29:58,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:29:58,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:29:58,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 13:29:58,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:29:58,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:58,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:29:59,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:30:00,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:30:00,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148539905] [2021-05-02 13:30:00,999 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:30:00,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371928448] [2021-05-02 13:30:01,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371928448] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:30:01,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:30:01,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2021-05-02 13:30:01,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366580081] [2021-05-02 13:30:01,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 13:30:01,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:30:01,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 13:30:01,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 13:30:01,001 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand has 72 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 71 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:30:03,126 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-05-02 13:30:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 13:30:03,164 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 71 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-02 13:30:03,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:30:03,165 INFO L225 Difference]: With dead ends: 86 [2021-05-02 13:30:03,165 INFO L226 Difference]: Without dead ends: 81 [2021-05-02 13:30:03,166 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2669.8ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 13:30:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-02 13:30:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-05-02 13:30:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2021-05-02 13:30:03,168 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2021-05-02 13:30:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:30:03,168 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2021-05-02 13:30:03,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 71 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2021-05-02 13:30:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-02 13:30:03,171 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:30:03,171 INFO L523 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:30:03,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 13:30:03,381 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:30:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:30:03,381 INFO L82 PathProgramCache]: Analyzing trace with hash -632038830, now seen corresponding path program 69 times [2021-05-02 13:30:03,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:30:03,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027796994] [2021-05-02 13:30:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:30:03,401 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:30:03,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702079284] [2021-05-02 13:30:03,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:30:03,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-05-02 13:30:03,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:30:03,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 13:30:03,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:30:03,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:03,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:04,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:05,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:30:06,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:30:06,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027796994] [2021-05-02 13:30:06,922 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:30:06,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702079284] [2021-05-02 13:30:06,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702079284] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:30:06,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:30:06,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2021-05-02 13:30:06,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611617573] [2021-05-02 13:30:06,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 13:30:06,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:30:06,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 13:30:06,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 13:30:06,923 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 73 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 72 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:30:11,206 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-05-02 13:30:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 13:30:11,224 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 72 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2021-05-02 13:30:11,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:30:11,224 INFO L225 Difference]: With dead ends: 87 [2021-05-02 13:30:11,225 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 13:30:11,225 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3028.4ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 13:30:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 13:30:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-02 13:30:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-05-02 13:30:11,236 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2021-05-02 13:30:11,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:30:11,236 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-05-02 13:30:11,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 72 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-05-02 13:30:11,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 13:30:11,236 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:30:11,237 INFO L523 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:30:11,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 13:30:11,445 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:30:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:30:11,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1916127819, now seen corresponding path program 70 times [2021-05-02 13:30:11,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:30:11,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969133776] [2021-05-02 13:30:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:30:11,455 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:30:11,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990218121] [2021-05-02 13:30:11,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:30:11,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:30:11,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:30:11,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 13:30:11,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:30:11,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:11,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:12,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:13,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:30:14,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:30:14,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969133776] [2021-05-02 13:30:14,983 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:30:14,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990218121] [2021-05-02 13:30:14,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990218121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:30:14,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:30:14,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2021-05-02 13:30:14,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164332008] [2021-05-02 13:30:14,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 13:30:14,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:30:14,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 13:30:14,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 13:30:14,985 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 74 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 73 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:18,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:30:18,947 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-05-02 13:30:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 13:30:18,953 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 73 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-02 13:30:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:30:18,953 INFO L225 Difference]: With dead ends: 88 [2021-05-02 13:30:18,953 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 13:30:18,954 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3135.3ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 13:30:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 13:30:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-02 13:30:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2021-05-02 13:30:18,956 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2021-05-02 13:30:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:30:18,956 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2021-05-02 13:30:18,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 73 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:18,956 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2021-05-02 13:30:18,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-02 13:30:18,956 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:30:18,956 INFO L523 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:30:19,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:30:19,157 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:30:19,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:30:19,157 INFO L82 PathProgramCache]: Analyzing trace with hash -695084686, now seen corresponding path program 71 times [2021-05-02 13:30:19,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:30:19,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058922451] [2021-05-02 13:30:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:30:19,164 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:30:19,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962916650] [2021-05-02 13:30:19,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:30:19,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-05-02 13:30:19,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:30:19,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 13:30:19,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:30:19,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:20,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:21,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:30:22,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:30:22,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058922451] [2021-05-02 13:30:22,874 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:30:22,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962916650] [2021-05-02 13:30:22,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962916650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:30:22,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:30:22,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2021-05-02 13:30:22,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927343398] [2021-05-02 13:30:22,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 13:30:22,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:30:22,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 13:30:22,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 13:30:22,876 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 75 states, 75 states have (on average 1.04) internal successors, (78), 74 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:30:25,109 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2021-05-02 13:30:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 13:30:25,133 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.04) internal successors, (78), 74 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2021-05-02 13:30:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:30:25,134 INFO L225 Difference]: With dead ends: 89 [2021-05-02 13:30:25,134 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 13:30:25,135 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3298.2ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 13:30:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 13:30:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-05-02 13:30:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2021-05-02 13:30:25,137 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2021-05-02 13:30:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:30:25,137 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2021-05-02 13:30:25,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 1.04) internal successors, (78), 74 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2021-05-02 13:30:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 13:30:25,138 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:30:25,138 INFO L523 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:30:25,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:30:25,345 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:30:25,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:30:25,345 INFO L82 PathProgramCache]: Analyzing trace with hash -38293717, now seen corresponding path program 72 times [2021-05-02 13:30:25,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:30:25,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046118428] [2021-05-02 13:30:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:30:25,365 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:30:25,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645085112] [2021-05-02 13:30:25,365 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:30:25,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 13:30:25,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:30:25,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 13:30:25,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:30:25,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:25,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:26,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:27,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:28,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:29,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:30:29,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:30:29,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046118428] [2021-05-02 13:30:29,039 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:30:29,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645085112] [2021-05-02 13:30:29,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645085112] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:30:29,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:30:29,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2021-05-02 13:30:29,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121411792] [2021-05-02 13:30:29,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 13:30:29,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:30:29,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 13:30:29,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 13:30:29,040 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 76 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 75 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:30:42,880 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2021-05-02 13:30:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 13:30:42,902 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 75 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-05-02 13:30:42,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:30:42,902 INFO L225 Difference]: With dead ends: 90 [2021-05-02 13:30:42,902 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 13:30:42,902 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3237.0ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 13:30:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 13:30:42,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-05-02 13:30:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:42,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2021-05-02 13:30:42,905 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2021-05-02 13:30:42,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:30:42,905 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2021-05-02 13:30:42,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 75 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2021-05-02 13:30:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-05-02 13:30:42,906 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:30:42,906 INFO L523 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:30:43,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:30:43,107 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:30:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:30:43,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1152610158, now seen corresponding path program 73 times [2021-05-02 13:30:43,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:30:43,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829513703] [2021-05-02 13:30:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:30:43,114 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:30:43,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418561689] [2021-05-02 13:30:43,115 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:30:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:30:43,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 13:30:43,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:30:43,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:43,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:44,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:45,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:30:46,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:30:46,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829513703] [2021-05-02 13:30:46,782 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:30:46,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418561689] [2021-05-02 13:30:46,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418561689] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:30:46,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:30:46,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2021-05-02 13:30:46,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456611398] [2021-05-02 13:30:46,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 13:30:46,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:30:46,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 13:30:46,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 13:30:46,783 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 77 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 76 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:30:55,050 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-05-02 13:30:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 13:30:55,071 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 76 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2021-05-02 13:30:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:30:55,072 INFO L225 Difference]: With dead ends: 91 [2021-05-02 13:30:55,072 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 13:30:55,072 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3260.9ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 13:30:55,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 13:30:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-05-02 13:30:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-05-02 13:30:55,075 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2021-05-02 13:30:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:30:55,076 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-05-02 13:30:55,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 76 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-05-02 13:30:55,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 13:30:55,076 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:30:55,076 INFO L523 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:30:55,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-05-02 13:30:55,279 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:30:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:30:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1336681461, now seen corresponding path program 74 times [2021-05-02 13:30:55,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:30:55,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082534364] [2021-05-02 13:30:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:30:55,297 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:30:55,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827628447] [2021-05-02 13:30:55,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:30:55,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:30:55,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:30:55,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-02 13:30:55,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:30:55,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:55,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:56,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:57,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:58,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:59,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:30:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:30:59,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:30:59,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082534364] [2021-05-02 13:30:59,041 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:30:59,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827628447] [2021-05-02 13:30:59,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827628447] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:30:59,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:30:59,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2021-05-02 13:30:59,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958819892] [2021-05-02 13:30:59,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 13:30:59,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:30:59,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 13:30:59,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 13:30:59,042 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 78 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 77 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:09,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:31:09,681 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-05-02 13:31:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 13:31:09,683 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 77 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-02 13:31:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:31:09,683 INFO L225 Difference]: With dead ends: 92 [2021-05-02 13:31:09,683 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 13:31:09,684 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3360.4ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 13:31:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 13:31:09,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-05-02 13:31:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2021-05-02 13:31:09,686 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2021-05-02 13:31:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:31:09,687 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2021-05-02 13:31:09,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 77 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:09,687 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2021-05-02 13:31:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-02 13:31:09,687 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:31:09,687 INFO L523 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:31:09,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:31:09,897 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:31:09,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:31:09,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1547042738, now seen corresponding path program 75 times [2021-05-02 13:31:09,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:31:09,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599218658] [2021-05-02 13:31:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:31:09,903 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:31:09,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857642737] [2021-05-02 13:31:09,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:31:10,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-05-02 13:31:10,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:31:10,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 13:31:10,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:31:10,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:10,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:11,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:12,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:31:13,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:31:13,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599218658] [2021-05-02 13:31:13,881 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:31:13,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857642737] [2021-05-02 13:31:13,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857642737] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:31:13,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:31:13,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2021-05-02 13:31:13,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682483566] [2021-05-02 13:31:13,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 13:31:13,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:31:13,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 13:31:13,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 13:31:13,882 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 79 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 78 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:22,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:31:22,149 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-05-02 13:31:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 13:31:22,167 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 78 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2021-05-02 13:31:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:31:22,168 INFO L225 Difference]: With dead ends: 93 [2021-05-02 13:31:22,168 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 13:31:22,168 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3560.7ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 13:31:22,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 13:31:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-02 13:31:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2021-05-02 13:31:22,171 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2021-05-02 13:31:22,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:31:22,171 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2021-05-02 13:31:22,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 78 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2021-05-02 13:31:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 13:31:22,171 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:31:22,171 INFO L523 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:31:22,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:31:22,381 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:31:22,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:31:22,381 INFO L82 PathProgramCache]: Analyzing trace with hash 748179691, now seen corresponding path program 76 times [2021-05-02 13:31:22,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:31:22,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967722383] [2021-05-02 13:31:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:31:22,387 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:31:22,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469468548] [2021-05-02 13:31:22,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:31:22,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:31:22,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:31:22,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 13:31:22,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:31:22,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:22,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:23,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:24,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:25,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:26,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:26,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:26,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:26,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:26,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:26,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:26,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:31:26,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:31:26,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967722383] [2021-05-02 13:31:26,340 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:31:26,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469468548] [2021-05-02 13:31:26,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469468548] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:31:26,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:31:26,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2021-05-02 13:31:26,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87354988] [2021-05-02 13:31:26,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 13:31:26,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:31:26,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 13:31:26,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 13:31:26,342 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 80 states, 80 states have (on average 1.0375) internal successors, (83), 79 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:31:42,802 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2021-05-02 13:31:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 13:31:42,803 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.0375) internal successors, (83), 79 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-02 13:31:42,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:31:42,804 INFO L225 Difference]: With dead ends: 94 [2021-05-02 13:31:42,804 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 13:31:42,804 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3579.0ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 13:31:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 13:31:42,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-05-02 13:31:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0119047619047619) internal successors, (85), 84 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2021-05-02 13:31:42,806 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2021-05-02 13:31:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:31:42,806 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2021-05-02 13:31:42,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.0375) internal successors, (83), 79 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:42,806 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2021-05-02 13:31:42,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-05-02 13:31:42,807 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:31:42,807 INFO L523 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:31:43,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-05-02 13:31:43,007 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:31:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:31:43,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1753229010, now seen corresponding path program 77 times [2021-05-02 13:31:43,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:31:43,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852119849] [2021-05-02 13:31:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:31:43,015 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:31:43,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507008930] [2021-05-02 13:31:43,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:31:43,139 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-05-02 13:31:43,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:31:43,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 13:31:43,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:31:43,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:43,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:44,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:45,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:46,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:47,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:31:47,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:31:47,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852119849] [2021-05-02 13:31:47,058 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:31:47,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507008930] [2021-05-02 13:31:47,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507008930] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:31:47,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:31:47,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2021-05-02 13:31:47,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410306895] [2021-05-02 13:31:47,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 13:31:47,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:31:47,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 13:31:47,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 13:31:47,060 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 81 states, 81 states have (on average 1.037037037037037) internal successors, (84), 80 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:55,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:31:55,367 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2021-05-02 13:31:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 13:31:55,390 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.037037037037037) internal successors, (84), 80 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2021-05-02 13:31:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:31:55,390 INFO L225 Difference]: With dead ends: 95 [2021-05-02 13:31:55,390 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 13:31:55,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3605.7ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 13:31:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 13:31:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-02 13:31:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2021-05-02 13:31:55,393 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2021-05-02 13:31:55,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:31:55,393 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2021-05-02 13:31:55,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 1.037037037037037) internal successors, (84), 80 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:31:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2021-05-02 13:31:55,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 13:31:55,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:31:55,394 INFO L523 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:31:55,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-02 13:31:55,595 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:31:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:31:55,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1449980469, now seen corresponding path program 78 times [2021-05-02 13:31:55,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:31:55,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751341556] [2021-05-02 13:31:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:31:55,607 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:31:55,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278835350] [2021-05-02 13:31:55,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:31:55,753 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-05-02 13:31:55,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:31:55,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 13:31:55,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:31:55,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:55,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:56,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:57,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:58,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:31:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:31:59,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:31:59,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751341556] [2021-05-02 13:31:59,875 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:31:59,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278835350] [2021-05-02 13:31:59,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278835350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:31:59,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:31:59,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2021-05-02 13:31:59,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838736940] [2021-05-02 13:31:59,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 13:31:59,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:31:59,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 13:31:59,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 13:31:59,876 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand has 82 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 81 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:32:11,084 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-05-02 13:32:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 13:32:11,086 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 81 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-05-02 13:32:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:32:11,086 INFO L225 Difference]: With dead ends: 96 [2021-05-02 13:32:11,086 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 13:32:11,087 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3799.5ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 13:32:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 13:32:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-05-02 13:32:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0116279069767442) internal successors, (87), 86 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2021-05-02 13:32:11,089 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2021-05-02 13:32:11,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:32:11,089 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2021-05-02 13:32:11,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 81 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2021-05-02 13:32:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-05-02 13:32:11,090 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:32:11,090 INFO L523 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:32:11,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:32:11,296 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:32:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:32:11,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1965226510, now seen corresponding path program 79 times [2021-05-02 13:32:11,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:32:11,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129145802] [2021-05-02 13:32:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:32:11,302 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:32:11,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611975622] [2021-05-02 13:32:11,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:32:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:32:11,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 13:32:11,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:32:11,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:11,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:12,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:13,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:14,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:32:15,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:32:15,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129145802] [2021-05-02 13:32:15,572 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:32:15,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611975622] [2021-05-02 13:32:15,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611975622] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:32:15,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:32:15,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2021-05-02 13:32:15,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692143432] [2021-05-02 13:32:15,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 13:32:15,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:32:15,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 13:32:15,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 13:32:15,573 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 83 states, 83 states have (on average 1.036144578313253) internal successors, (86), 82 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:32:24,982 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-05-02 13:32:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 13:32:24,984 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.036144578313253) internal successors, (86), 82 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2021-05-02 13:32:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:32:24,984 INFO L225 Difference]: With dead ends: 97 [2021-05-02 13:32:24,984 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 13:32:24,985 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3868.8ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 13:32:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 13:32:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-02 13:32:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-05-02 13:32:24,988 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2021-05-02 13:32:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:32:24,988 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-05-02 13:32:24,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 1.036144578313253) internal successors, (86), 82 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-05-02 13:32:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 13:32:24,989 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:32:24,989 INFO L523 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:32:25,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 13:32:25,194 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:32:25,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:32:25,194 INFO L82 PathProgramCache]: Analyzing trace with hash -757984597, now seen corresponding path program 80 times [2021-05-02 13:32:25,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:32:25,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823538628] [2021-05-02 13:32:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:32:25,200 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:32:25,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135277000] [2021-05-02 13:32:25,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:32:25,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:32:25,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:32:25,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 13:32:25,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:32:25,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:25,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:26,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:27,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:28,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:32:29,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:32:29,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823538628] [2021-05-02 13:32:29,607 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:32:29,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135277000] [2021-05-02 13:32:29,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135277000] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:32:29,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:32:29,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2021-05-02 13:32:29,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631996300] [2021-05-02 13:32:29,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 13:32:29,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:32:29,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 13:32:29,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 13:32:29,615 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 84 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 83 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:32:37,897 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-05-02 13:32:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 13:32:37,908 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 83 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-05-02 13:32:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:32:37,909 INFO L225 Difference]: With dead ends: 98 [2021-05-02 13:32:37,909 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 13:32:37,909 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4018.5ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 13:32:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 13:32:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-05-02 13:32:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0113636363636365) internal successors, (89), 88 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:37,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2021-05-02 13:32:37,911 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2021-05-02 13:32:37,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:32:37,911 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2021-05-02 13:32:37,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 83 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:37,911 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2021-05-02 13:32:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-05-02 13:32:37,911 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:32:37,912 INFO L523 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:32:38,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:32:38,112 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:32:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:32:38,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1988190958, now seen corresponding path program 81 times [2021-05-02 13:32:38,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:32:38,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970089438] [2021-05-02 13:32:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:32:38,119 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:32:38,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813435181] [2021-05-02 13:32:38,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:32:38,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 13:32:38,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:32:38,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 13:32:38,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:32:38,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:38,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:39,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:40,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:41,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:32:42,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:32:42,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970089438] [2021-05-02 13:32:42,631 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:32:42,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813435181] [2021-05-02 13:32:42,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813435181] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:32:42,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:32:42,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2021-05-02 13:32:42,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771031482] [2021-05-02 13:32:42,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 13:32:42,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:32:42,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 13:32:42,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 13:32:42,633 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand has 85 states, 85 states have (on average 1.035294117647059) internal successors, (88), 84 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:32:51,336 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2021-05-02 13:32:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 13:32:51,338 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.035294117647059) internal successors, (88), 84 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2021-05-02 13:32:51,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:32:51,338 INFO L225 Difference]: With dead ends: 99 [2021-05-02 13:32:51,338 INFO L226 Difference]: Without dead ends: 94 [2021-05-02 13:32:51,339 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4077.9ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 13:32:51,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-02 13:32:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-05-02 13:32:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0112359550561798) internal successors, (90), 89 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-05-02 13:32:51,341 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2021-05-02 13:32:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:32:51,341 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-05-02 13:32:51,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 1.035294117647059) internal successors, (88), 84 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:32:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-05-02 13:32:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 13:32:51,342 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:32:51,342 INFO L523 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:32:51,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:32:51,544 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:32:51,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:32:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1469882485, now seen corresponding path program 82 times [2021-05-02 13:32:51,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:32:51,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390843343] [2021-05-02 13:32:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:32:51,550 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:32:51,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294626522] [2021-05-02 13:32:51,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:32:51,640 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:32:51,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:32:51,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 13:32:51,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:32:51,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:51,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:52,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:53,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:54,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:55,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:56,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:56,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:56,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:32:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:32:56,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:32:56,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390843343] [2021-05-02 13:32:56,152 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:32:56,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294626522] [2021-05-02 13:32:56,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294626522] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:32:56,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:32:56,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2021-05-02 13:32:56,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876284983] [2021-05-02 13:32:56,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 13:32:56,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:32:56,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 13:32:56,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 13:32:56,153 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 86 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 85 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:33:00,400 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2021-05-02 13:33:00,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 13:33:00,428 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 85 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-02 13:33:00,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:33:00,429 INFO L225 Difference]: With dead ends: 100 [2021-05-02 13:33:00,429 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 13:33:00,429 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4172.4ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 13:33:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 13:33:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-05-02 13:33:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.011111111111111) internal successors, (91), 90 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2021-05-02 13:33:00,431 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2021-05-02 13:33:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:33:00,431 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2021-05-02 13:33:00,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 85 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2021-05-02 13:33:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-02 13:33:00,432 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:33:00,432 INFO L523 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:33:00,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:33:00,632 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:33:00,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:33:00,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1712778290, now seen corresponding path program 83 times [2021-05-02 13:33:00,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:33:00,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899385504] [2021-05-02 13:33:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:33:00,638 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:33:00,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992561696] [2021-05-02 13:33:00,639 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:33:00,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-05-02 13:33:00,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:33:00,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 13:33:00,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:33:00,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:00,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:01,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:02,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:03,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:04,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:33:05,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:33:05,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899385504] [2021-05-02 13:33:05,462 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:33:05,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992561696] [2021-05-02 13:33:05,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992561696] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:33:05,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:33:05,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2021-05-02 13:33:05,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749796519] [2021-05-02 13:33:05,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 13:33:05,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:33:05,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 13:33:05,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 13:33:05,464 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand has 87 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 86 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:33:17,884 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2021-05-02 13:33:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 13:33:17,916 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 86 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2021-05-02 13:33:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:33:17,917 INFO L225 Difference]: With dead ends: 101 [2021-05-02 13:33:17,917 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 13:33:17,917 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4381.8ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 13:33:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 13:33:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-02 13:33:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:17,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-05-02 13:33:17,919 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2021-05-02 13:33:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:33:17,919 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-05-02 13:33:17,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 86 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-05-02 13:33:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 13:33:17,920 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:33:17,920 INFO L523 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:33:18,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-05-02 13:33:18,121 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:33:18,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:33:18,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1591014507, now seen corresponding path program 84 times [2021-05-02 13:33:18,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:33:18,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313326381] [2021-05-02 13:33:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:33:18,127 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:33:18,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571181567] [2021-05-02 13:33:18,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:33:18,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 13:33:18,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:33:18,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 13:33:18,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:33:18,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:18,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:19,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:20,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:21,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:22,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:23,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:23,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:23,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:23,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:23,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:33:23,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:33:23,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313326381] [2021-05-02 13:33:23,219 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:33:23,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571181567] [2021-05-02 13:33:23,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571181567] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:33:23,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:33:23,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2021-05-02 13:33:23,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708230571] [2021-05-02 13:33:23,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 13:33:23,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:33:23,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 13:33:23,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 13:33:23,221 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 88 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 87 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:33:25,433 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2021-05-02 13:33:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 13:33:25,462 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 87 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-02 13:33:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:33:25,463 INFO L225 Difference]: With dead ends: 102 [2021-05-02 13:33:25,463 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 13:33:25,472 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4583.2ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 13:33:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 13:33:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-05-02 13:33:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0108695652173914) internal successors, (93), 92 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2021-05-02 13:33:25,475 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2021-05-02 13:33:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:33:25,475 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2021-05-02 13:33:25,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 87 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2021-05-02 13:33:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-05-02 13:33:25,476 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:33:25,476 INFO L523 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:33:25,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:33:25,677 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:33:25,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:33:25,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2111304530, now seen corresponding path program 85 times [2021-05-02 13:33:25,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:33:25,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908334686] [2021-05-02 13:33:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:33:25,686 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:33:25,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828618130] [2021-05-02 13:33:25,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:33:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:33:25,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 13:33:25,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:33:25,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:25,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:26,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:27,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:28,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:29,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:33:30,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:33:30,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908334686] [2021-05-02 13:33:30,853 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:33:30,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828618130] [2021-05-02 13:33:30,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828618130] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:33:30,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:33:30,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2021-05-02 13:33:30,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468456243] [2021-05-02 13:33:30,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 13:33:30,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:33:30,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 13:33:30,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 13:33:30,855 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 89 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 88 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:33:37,139 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2021-05-02 13:33:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 13:33:37,169 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 88 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2021-05-02 13:33:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:33:37,170 INFO L225 Difference]: With dead ends: 103 [2021-05-02 13:33:37,170 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 13:33:37,170 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4736.1ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 13:33:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 13:33:37,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 13:33:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-05-02 13:33:37,173 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2021-05-02 13:33:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:33:37,173 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-05-02 13:33:37,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 88 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:33:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-05-02 13:33:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 13:33:37,174 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:33:37,174 INFO L523 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:33:37,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-05-02 13:33:37,385 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:33:37,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:33:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1060426059, now seen corresponding path program 86 times [2021-05-02 13:33:37,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:33:37,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395001916] [2021-05-02 13:33:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:33:37,415 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 13:33:37,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576045239] [2021-05-02 13:33:37,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:33:37,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:33:37,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:33:37,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 13:33:37,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:33:37,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:37,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:38,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:39,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:40,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:41,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:33:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:33:42,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:33:42,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395001916] [2021-05-02 13:33:42,713 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 13:33:42,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576045239] [2021-05-02 13:33:42,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576045239] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:33:42,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:33:42,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2021-05-02 13:33:42,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69638717] [2021-05-02 13:33:42,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 13:33:42,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:33:42,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 13:33:42,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 13:33:42,715 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 90 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 89 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)