/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/nla-digbench-scaling/mannadiv_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 16:13:52,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 16:13:52,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 16:13:52,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 16:13:52,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 16:13:52,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 16:13:52,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 16:13:52,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 16:13:52,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 16:13:52,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 16:13:52,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 16:13:52,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 16:13:52,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 16:13:52,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 16:13:53,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 16:13:53,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 16:13:53,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 16:13:53,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 16:13:53,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 16:13:53,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 16:13:53,018 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 16:13:53,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 16:13:53,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 16:13:53,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 16:13:53,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 16:13:53,053 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 16:13:53,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 16:13:53,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 16:13:53,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 16:13:53,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 16:13:53,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 16:13:53,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 16:13:53,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 16:13:53,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 16:13:53,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 16:13:53,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 16:13:53,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 16:13:53,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 16:13:53,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 16:13:53,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 16:13:53,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 16:13:53,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 16:13:53,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 16:13:53,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 16:13:53,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 16:13:53,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 16:13:53,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 16:13:53,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 16:13:53,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 16:13:53,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 16:13:53,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 16:13:53,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 16:13:53,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 16:13:53,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 16:13:53,371 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 16:13:53,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c [2021-05-02 16:13:53,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0d3ad48/740962f696a045d0b3cee2d4dcf9abbd/FLAG237880be4 [2021-05-02 16:13:53,767 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 16:13:53,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c [2021-05-02 16:13:53,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0d3ad48/740962f696a045d0b3cee2d4dcf9abbd/FLAG237880be4 [2021-05-02 16:13:53,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0d3ad48/740962f696a045d0b3cee2d4dcf9abbd [2021-05-02 16:13:53,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 16:13:53,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 16:13:53,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 16:13:53,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 16:13:53,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 16:13:53,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:13:53" (1/1) ... [2021-05-02 16:13:53,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55fb455c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53, skipping insertion in model container [2021-05-02 16:13:53,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:13:53" (1/1) ... [2021-05-02 16:13:53,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 16:13:53,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 16:13:53,923 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2021-05-02 16:13:53,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:13:53,939 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 16:13:53,948 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2021-05-02 16:13:53,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:13:53,969 INFO L208 MainTranslator]: Completed translation [2021-05-02 16:13:53,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53 WrapperNode [2021-05-02 16:13:53,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 16:13:53,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 16:13:53,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 16:13:53,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 16:13:53,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53" (1/1) ... [2021-05-02 16:13:53,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53" (1/1) ... [2021-05-02 16:13:53,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53" (1/1) ... [2021-05-02 16:13:53,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53" (1/1) ... [2021-05-02 16:13:54,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53" (1/1) ... [2021-05-02 16:13:54,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53" (1/1) ... [2021-05-02 16:13:54,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53" (1/1) ... [2021-05-02 16:13:54,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 16:13:54,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 16:13:54,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 16:13:54,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 16:13:54,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53" (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 16:13:54,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 16:13:54,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 16:13:54,092 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 16:13:54,092 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 16:13:54,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 16:13:54,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 16:13:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 16:13:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 16:13:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 16:13:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 16:13:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 16:13:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 16:13:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 16:13:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 16:13:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 16:13:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 16:13:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 16:13:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 16:13:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 16:13:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 16:13:54,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 16:13:54,274 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 16:13:54,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:13:54 BoogieIcfgContainer [2021-05-02 16:13:54,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 16:13:54,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 16:13:54,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 16:13:54,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 16:13:54,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 04:13:53" (1/3) ... [2021-05-02 16:13:54,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32eb2991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:13:54, skipping insertion in model container [2021-05-02 16:13:54,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:13:53" (2/3) ... [2021-05-02 16:13:54,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32eb2991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:13:54, skipping insertion in model container [2021-05-02 16:13:54,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:13:54" (3/3) ... [2021-05-02 16:13:54,279 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound50.c [2021-05-02 16:13:54,283 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 16:13:54,285 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 16:13:54,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 16:13:54,308 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 16:13:54,309 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 16:13:54,309 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 16:13:54,309 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 16:13:54,309 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 16:13:54,309 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 16:13:54,309 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 16:13:54,309 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 16:13:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 16:13:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 16:13:54,321 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:54,321 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:54,321 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:54,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:54,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1859024204, now seen corresponding path program 1 times [2021-05-02 16:13:54,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:54,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432253681] [2021-05-02 16:13:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:13:54,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 16:13:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:13:54,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 16:13:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:13:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 16:13:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:13:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:13:54,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:54,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432253681] [2021-05-02 16:13:54,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432253681] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 16:13:54,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 16:13:54,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 16:13:54,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996345242] [2021-05-02 16:13:54,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 16:13:54,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:54,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 16:13:54,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:13:54,580 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:13:54,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:54,653 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2021-05-02 16:13:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 16:13:54,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-02 16:13:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:54,660 INFO L225 Difference]: With dead ends: 54 [2021-05-02 16:13:54,660 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 16:13:54,663 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:13:54,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 16:13:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-02 16:13:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 16:13:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-05-02 16:13:54,696 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2021-05-02 16:13:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:54,697 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-05-02 16:13:54,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:13:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-05-02 16:13:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 16:13:54,698 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:54,698 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:54,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 16:13:54,699 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:54,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:54,706 INFO L82 PathProgramCache]: Analyzing trace with hash 243739414, now seen corresponding path program 1 times [2021-05-02 16:13:54,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:54,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873223022] [2021-05-02 16:13:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:54,728 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:54,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736606627] [2021-05-02 16:13:54,728 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 16:13:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:13:54,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 16:13:54,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:54,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:54,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:54,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:54,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:54,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:13:54,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:54,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873223022] [2021-05-02 16:13:54,893 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:54,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736606627] [2021-05-02 16:13:54,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736606627] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 16:13:54,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 16:13:54,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 16:13:54,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591485216] [2021-05-02 16:13:54,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 16:13:54,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:54,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 16:13:54,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 16:13:54,895 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:13:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:54,907 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-02 16:13:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 16:13:54,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 16:13:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:54,909 INFO L225 Difference]: With dead ends: 34 [2021-05-02 16:13:54,909 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 16:13:54,910 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 16:13:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 16:13:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 16:13:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 16:13:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-02 16:13:54,915 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2021-05-02 16:13:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:54,916 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-02 16:13:54,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:13:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-02 16:13:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 16:13:54,917 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:54,917 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:55,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 16:13:55,128 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:55,128 INFO L82 PathProgramCache]: Analyzing trace with hash 245526874, now seen corresponding path program 1 times [2021-05-02 16:13:55,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:55,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878883214] [2021-05-02 16:13:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:55,138 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:55,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521285884] [2021-05-02 16:13:55,138 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 16:13:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:13:55,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 16:13:55,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:55,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 16:13:55,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:55,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878883214] [2021-05-02 16:13:55,276 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:55,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521285884] [2021-05-02 16:13:55,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521285884] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:13:55,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:13:55,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 16:13:55,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540798717] [2021-05-02 16:13:55,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 16:13:55,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:55,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 16:13:55,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 16:13:55,279 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:13:55,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:55,373 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2021-05-02 16:13:55,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 16:13:55,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 16:13:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:55,374 INFO L225 Difference]: With dead ends: 37 [2021-05-02 16:13:55,374 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 16:13:55,375 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 16:13:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 16:13:55,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-05-02 16:13:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 16:13:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-05-02 16:13:55,379 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2021-05-02 16:13:55,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:55,380 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-05-02 16:13:55,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:13:55,380 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-05-02 16:13:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 16:13:55,380 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:55,380 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:55,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:13:55,581 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:55,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:55,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1019533657, now seen corresponding path program 1 times [2021-05-02 16:13:55,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:55,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528857257] [2021-05-02 16:13:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:55,590 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:55,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133024390] [2021-05-02 16:13:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 16:13:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:13:55,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 16:13:55,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:55,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 16:13:55,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:55,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528857257] [2021-05-02 16:13:55,778 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:55,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133024390] [2021-05-02 16:13:55,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133024390] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:13:55,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:13:55,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 16:13:55,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099559623] [2021-05-02 16:13:55,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 16:13:55,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:55,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 16:13:55,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 16:13:55,781 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:13:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:55,892 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-05-02 16:13:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 16:13:55,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2021-05-02 16:13:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:55,895 INFO L225 Difference]: With dead ends: 39 [2021-05-02 16:13:55,895 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 16:13:55,897 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-05-02 16:13:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 16:13:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2021-05-02 16:13:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 16:13:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-05-02 16:13:55,913 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2021-05-02 16:13:55,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:55,914 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-05-02 16:13:55,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:13:55,914 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-05-02 16:13:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-02 16:13:55,916 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:55,916 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:56,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:13:56,125 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1080225052, now seen corresponding path program 1 times [2021-05-02 16:13:56,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:56,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796594286] [2021-05-02 16:13:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:56,133 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:56,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182498277] [2021-05-02 16:13:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 16:13:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:13:56,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 16:13:56,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:56,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:13:56,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:56,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796594286] [2021-05-02 16:13:56,354 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:56,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182498277] [2021-05-02 16:13:56,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182498277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:13:56,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:13:56,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 16:13:56,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223516856] [2021-05-02 16:13:56,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 16:13:56,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:56,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 16:13:56,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 16:13:56,356 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:13:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:56,389 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2021-05-02 16:13:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 16:13:56,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2021-05-02 16:13:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:56,390 INFO L225 Difference]: With dead ends: 43 [2021-05-02 16:13:56,390 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 16:13:56,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 16:13:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 16:13:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 16:13:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 16:13:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 16:13:56,394 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2021-05-02 16:13:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:56,395 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 16:13:56,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:13:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 16:13:56,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 16:13:56,395 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:56,396 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:56,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:13:56,614 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:56,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1448743382, now seen corresponding path program 2 times [2021-05-02 16:13:56,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:56,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140608768] [2021-05-02 16:13:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:56,622 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:56,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518763685] [2021-05-02 16:13:56,622 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 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 16:13:56,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:13:56,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:13:56,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 16:13:56,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:56,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:13:56,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:56,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140608768] [2021-05-02 16:13:56,923 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:56,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518763685] [2021-05-02 16:13:56,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518763685] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:13:56,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:13:56,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 16:13:56,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001186727] [2021-05-02 16:13:56,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 16:13:56,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:56,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 16:13:56,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 16:13:56,927 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 16:13:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:56,965 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-05-02 16:13:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 16:13:56,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 41 [2021-05-02 16:13:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:56,966 INFO L225 Difference]: With dead ends: 52 [2021-05-02 16:13:56,966 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 16:13:56,966 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 16:13:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 16:13:56,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-02 16:13:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 16:13:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-05-02 16:13:56,971 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 41 [2021-05-02 16:13:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:56,971 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-05-02 16:13:56,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 16:13:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-05-02 16:13:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 16:13:56,972 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:56,972 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:57,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 16:13:57,187 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:57,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:57,188 INFO L82 PathProgramCache]: Analyzing trace with hash -678977956, now seen corresponding path program 3 times [2021-05-02 16:13:57,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:57,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801760535] [2021-05-02 16:13:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:57,195 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:57,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413767289] [2021-05-02 16:13:57,196 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 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 16:13:57,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 16:13:57,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:13:57,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 16:13:57,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:57,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:13:57,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:57,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801760535] [2021-05-02 16:13:57,412 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:57,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413767289] [2021-05-02 16:13:57,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413767289] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:13:57,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:13:57,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 16:13:57,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78160909] [2021-05-02 16:13:57,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 16:13:57,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:57,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 16:13:57,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 16:13:57,413 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-02 16:13:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:57,474 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2021-05-02 16:13:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 16:13:57,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2021-05-02 16:13:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:57,475 INFO L225 Difference]: With dead ends: 61 [2021-05-02 16:13:57,475 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 16:13:57,476 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-05-02 16:13:57,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 16:13:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 16:13:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 16:13:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-02 16:13:57,481 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 50 [2021-05-02 16:13:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:57,481 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-02 16:13:57,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-02 16:13:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-02 16:13:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 16:13:57,482 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:57,482 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:57,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:13:57,697 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:57,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:57,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1632159894, now seen corresponding path program 4 times [2021-05-02 16:13:57,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:57,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825552326] [2021-05-02 16:13:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:57,705 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:57,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827699808] [2021-05-02 16:13:57,705 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 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 16:13:57,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 16:13:57,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:13:57,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 16:13:57,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:57,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:13:57,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:57,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825552326] [2021-05-02 16:13:57,883 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:57,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827699808] [2021-05-02 16:13:57,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827699808] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:13:57,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:13:57,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 16:13:57,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482834340] [2021-05-02 16:13:57,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 16:13:57,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:57,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 16:13:57,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 16:13:57,884 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-02 16:13:57,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:57,948 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2021-05-02 16:13:57,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 16:13:57,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 59 [2021-05-02 16:13:57,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:57,949 INFO L225 Difference]: With dead ends: 70 [2021-05-02 16:13:57,949 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 16:13:57,949 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-05-02 16:13:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 16:13:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-02 16:13:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 10 states have call successors, (10), 9 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 16:13:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-05-02 16:13:57,955 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 59 [2021-05-02 16:13:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:57,955 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-05-02 16:13:57,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-02 16:13:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-05-02 16:13:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 16:13:57,956 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:57,956 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:58,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:13:58,157 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:58,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1512407140, now seen corresponding path program 5 times [2021-05-02 16:13:58,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:58,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662365298] [2021-05-02 16:13:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:58,164 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:58,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550274562] [2021-05-02 16:13:58,165 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 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 16:13:58,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 16:13:58,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:13:58,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 16:13:58,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:58,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:13:58,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:58,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662365298] [2021-05-02 16:13:58,363 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:58,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550274562] [2021-05-02 16:13:58,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550274562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:13:58,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:13:58,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 16:13:58,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88656323] [2021-05-02 16:13:58,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 16:13:58,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:58,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 16:13:58,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-02 16:13:58,365 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-02 16:13:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:58,439 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-05-02 16:13:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 16:13:58,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2021-05-02 16:13:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:58,441 INFO L225 Difference]: With dead ends: 79 [2021-05-02 16:13:58,441 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 16:13:58,441 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-05-02 16:13:58,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 16:13:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 16:13:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 11 states have call successors, (11), 10 states have call predecessors, (11), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 16:13:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-02 16:13:58,461 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 68 [2021-05-02 16:13:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:58,461 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-02 16:13:58,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-02 16:13:58,462 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-02 16:13:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 16:13:58,464 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:58,464 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:58,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 16:13:58,669 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:58,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:58,669 INFO L82 PathProgramCache]: Analyzing trace with hash 771706710, now seen corresponding path program 6 times [2021-05-02 16:13:58,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:58,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170640068] [2021-05-02 16:13:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:58,682 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:58,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826593243] [2021-05-02 16:13:58,683 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 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 16:13:58,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 16:13:58,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:13:58,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 16:13:58,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:58,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:13:58,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:58,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170640068] [2021-05-02 16:13:58,912 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:58,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826593243] [2021-05-02 16:13:58,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826593243] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:13:58,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:13:58,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 16:13:58,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819680857] [2021-05-02 16:13:58,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 16:13:58,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:58,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 16:13:58,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 16:13:58,913 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-02 16:13:58,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:58,993 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2021-05-02 16:13:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 16:13:58,994 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 77 [2021-05-02 16:13:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:58,994 INFO L225 Difference]: With dead ends: 88 [2021-05-02 16:13:58,995 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 16:13:58,995 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-05-02 16:13:58,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 16:13:58,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-02 16:13:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 16:13:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-05-02 16:13:59,000 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 77 [2021-05-02 16:13:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:59,000 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-05-02 16:13:59,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-02 16:13:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-05-02 16:13:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-02 16:13:59,001 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:59,001 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:59,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:13:59,217 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1848611036, now seen corresponding path program 7 times [2021-05-02 16:13:59,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:59,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123690013] [2021-05-02 16:13:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:59,224 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:59,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895451621] [2021-05-02 16:13:59,224 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 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 16:13:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:13:59,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 16:13:59,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:59,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 14 proven. 203 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:13:59,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:13:59,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123690013] [2021-05-02 16:13:59,453 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:13:59,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895451621] [2021-05-02 16:13:59,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895451621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:13:59,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:13:59,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 16:13:59,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150877168] [2021-05-02 16:13:59,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 16:13:59,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:13:59,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 16:13:59,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 16:13:59,455 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-02 16:13:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:13:59,565 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2021-05-02 16:13:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 16:13:59,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) Word has length 86 [2021-05-02 16:13:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:13:59,567 INFO L225 Difference]: With dead ends: 97 [2021-05-02 16:13:59,567 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 16:13:59,567 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-05-02 16:13:59,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 16:13:59,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-02 16:13:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 68 states have internal predecessors, (77), 13 states have call successors, (13), 12 states have call predecessors, (13), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 16:13:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-05-02 16:13:59,572 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 86 [2021-05-02 16:13:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:13:59,573 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-05-02 16:13:59,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-02 16:13:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-05-02 16:13:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 16:13:59,573 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:13:59,574 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:13:59,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:13:59,786 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:13:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:13:59,787 INFO L82 PathProgramCache]: Analyzing trace with hash -399923690, now seen corresponding path program 8 times [2021-05-02 16:13:59,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:13:59,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482080131] [2021-05-02 16:13:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:13:59,793 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:13:59,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183567494] [2021-05-02 16:13:59,793 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 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 16:13:59,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:13:59,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:13:59,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 16:13:59,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:13:59,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:13:59,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 16 proven. 268 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:00,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:00,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482080131] [2021-05-02 16:14:00,033 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:00,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183567494] [2021-05-02 16:14:00,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183567494] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:00,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:00,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 16:14:00,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403548397] [2021-05-02 16:14:00,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 16:14:00,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:00,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 16:14:00,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-02 16:14:00,035 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-02 16:14:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:00,145 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2021-05-02 16:14:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 16:14:00,145 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 95 [2021-05-02 16:14:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:00,146 INFO L225 Difference]: With dead ends: 106 [2021-05-02 16:14:00,146 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 16:14:00,146 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-05-02 16:14:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 16:14:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-02 16:14:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 14 states have call successors, (14), 13 states have call predecessors, (14), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 16:14:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-05-02 16:14:00,159 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 95 [2021-05-02 16:14:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:00,159 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-05-02 16:14:00,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-02 16:14:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-05-02 16:14:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-02 16:14:00,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:00,160 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:00,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 16:14:00,375 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:00,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1717228060, now seen corresponding path program 9 times [2021-05-02 16:14:00,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:00,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865282763] [2021-05-02 16:14:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:00,394 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:00,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831017029] [2021-05-02 16:14:00,394 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 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 16:14:00,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 16:14:00,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:00,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 16:14:00,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:00,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 18 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:00,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:00,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865282763] [2021-05-02 16:14:00,679 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:00,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831017029] [2021-05-02 16:14:00,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831017029] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:00,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:00,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 16:14:00,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717427786] [2021-05-02 16:14:00,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 16:14:00,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:00,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 16:14:00,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 16:14:00,680 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-02 16:14:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:00,811 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2021-05-02 16:14:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 16:14:00,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 104 [2021-05-02 16:14:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:00,813 INFO L225 Difference]: With dead ends: 115 [2021-05-02 16:14:00,813 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 16:14:00,813 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-05-02 16:14:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 16:14:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-02 16:14:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 16:14:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-05-02 16:14:00,825 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 104 [2021-05-02 16:14:00,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:00,825 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-05-02 16:14:00,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-02 16:14:00,825 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-05-02 16:14:00,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 16:14:00,826 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:00,826 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:01,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 16:14:01,041 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:01,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1468805930, now seen corresponding path program 10 times [2021-05-02 16:14:01,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:01,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16236188] [2021-05-02 16:14:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:01,052 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:01,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793537839] [2021-05-02 16:14:01,052 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 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 16:14:01,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 16:14:01,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:01,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 16:14:01,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:01,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:01,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:01,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16236188] [2021-05-02 16:14:01,341 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:01,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793537839] [2021-05-02 16:14:01,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793537839] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:01,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:01,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 16:14:01,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291718183] [2021-05-02 16:14:01,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 16:14:01,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:01,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 16:14:01,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 16:14:01,343 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2021-05-02 16:14:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:01,470 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-05-02 16:14:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 16:14:01,470 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) Word has length 113 [2021-05-02 16:14:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:01,471 INFO L225 Difference]: With dead ends: 124 [2021-05-02 16:14:01,471 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 16:14:01,471 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-05-02 16:14:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 16:14:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-02 16:14:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 89 states have internal predecessors, (101), 16 states have call successors, (16), 15 states have call predecessors, (16), 13 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 16:14:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2021-05-02 16:14:01,476 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 113 [2021-05-02 16:14:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:01,476 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2021-05-02 16:14:01,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2021-05-02 16:14:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2021-05-02 16:14:01,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-02 16:14:01,477 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:01,477 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:01,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 16:14:01,693 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:01,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:01,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1999651676, now seen corresponding path program 11 times [2021-05-02 16:14:01,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:01,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569583014] [2021-05-02 16:14:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:01,704 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:01,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274124934] [2021-05-02 16:14:01,704 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 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 16:14:01,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 16:14:01,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:01,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 16:14:01,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:01,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:01,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 22 proven. 517 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:02,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:02,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569583014] [2021-05-02 16:14:02,022 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:02,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274124934] [2021-05-02 16:14:02,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274124934] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:02,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:02,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-02 16:14:02,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468727240] [2021-05-02 16:14:02,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 16:14:02,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:02,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 16:14:02,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 16:14:02,024 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2021-05-02 16:14:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:02,174 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2021-05-02 16:14:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 16:14:02,175 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) Word has length 122 [2021-05-02 16:14:02,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:02,176 INFO L225 Difference]: With dead ends: 133 [2021-05-02 16:14:02,176 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 16:14:02,177 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2021-05-02 16:14:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 16:14:02,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-02 16:14:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 96 states have (on average 1.1354166666666667) internal successors, (109), 96 states have internal predecessors, (109), 17 states have call successors, (17), 16 states have call predecessors, (17), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 16:14:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-05-02 16:14:02,184 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 122 [2021-05-02 16:14:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:02,184 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-05-02 16:14:02,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2021-05-02 16:14:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-05-02 16:14:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 16:14:02,186 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:02,186 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:02,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:02,402 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:02,402 INFO L82 PathProgramCache]: Analyzing trace with hash 881443734, now seen corresponding path program 12 times [2021-05-02 16:14:02,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:02,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004142170] [2021-05-02 16:14:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:02,416 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:02,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873964093] [2021-05-02 16:14:02,416 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 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 16:14:02,495 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 16:14:02,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:02,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 16:14:02,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:02,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 24 proven. 618 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:02,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:02,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004142170] [2021-05-02 16:14:02,731 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:02,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873964093] [2021-05-02 16:14:02,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873964093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:02,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:02,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-05-02 16:14:02,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77699349] [2021-05-02 16:14:02,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 16:14:02,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:02,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 16:14:02,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 16:14:02,732 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2021-05-02 16:14:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:02,919 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2021-05-02 16:14:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 16:14:02,919 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) Word has length 131 [2021-05-02 16:14:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:02,920 INFO L225 Difference]: With dead ends: 142 [2021-05-02 16:14:02,920 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 16:14:02,920 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 159.4ms TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-05-02 16:14:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 16:14:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-05-02 16:14:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 103 states have internal predecessors, (117), 18 states have call successors, (18), 17 states have call predecessors, (18), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 16:14:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2021-05-02 16:14:02,925 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 131 [2021-05-02 16:14:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:02,926 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2021-05-02 16:14:02,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2021-05-02 16:14:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2021-05-02 16:14:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-05-02 16:14:02,926 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:02,927 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:03,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 16:14:03,141 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:03,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2089018524, now seen corresponding path program 13 times [2021-05-02 16:14:03,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:03,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376224873] [2021-05-02 16:14:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:03,146 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:03,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121039796] [2021-05-02 16:14:03,146 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 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 16:14:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:03,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 16:14:03,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:03,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 26 proven. 728 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:03,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:03,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376224873] [2021-05-02 16:14:03,488 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:03,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121039796] [2021-05-02 16:14:03,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121039796] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:03,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:03,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-05-02 16:14:03,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860028752] [2021-05-02 16:14:03,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 16:14:03,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:03,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 16:14:03,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-02 16:14:03,489 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-05-02 16:14:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:03,694 INFO L93 Difference]: Finished difference Result 151 states and 166 transitions. [2021-05-02 16:14:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 16:14:03,695 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) Word has length 140 [2021-05-02 16:14:03,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:03,696 INFO L225 Difference]: With dead ends: 151 [2021-05-02 16:14:03,696 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 16:14:03,696 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 181.5ms TimeCoverageRelationStatistics Valid=330, Invalid=540, Unknown=0, NotChecked=0, Total=870 [2021-05-02 16:14:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 16:14:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-02 16:14:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 110 states have internal predecessors, (125), 19 states have call successors, (19), 18 states have call predecessors, (19), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 16:14:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 161 transitions. [2021-05-02 16:14:03,701 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 161 transitions. Word has length 140 [2021-05-02 16:14:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:03,702 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 161 transitions. [2021-05-02 16:14:03,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-05-02 16:14:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 161 transitions. [2021-05-02 16:14:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 16:14:03,703 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:03,703 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:03,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 16:14:03,909 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:03,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1088976298, now seen corresponding path program 14 times [2021-05-02 16:14:03,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:03,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380582758] [2021-05-02 16:14:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:03,915 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:03,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053664592] [2021-05-02 16:14:03,915 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 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 16:14:03,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:14:03,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:03,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 16:14:03,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:03,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:03,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 28 proven. 847 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:04,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:04,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380582758] [2021-05-02 16:14:04,314 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:04,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053664592] [2021-05-02 16:14:04,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053664592] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:04,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:04,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-05-02 16:14:04,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801393812] [2021-05-02 16:14:04,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 16:14:04,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:04,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 16:14:04,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 16:14:04,315 INFO L87 Difference]: Start difference. First operand 146 states and 161 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2021-05-02 16:14:04,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:04,545 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2021-05-02 16:14:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 16:14:04,545 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) Word has length 149 [2021-05-02 16:14:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:04,546 INFO L225 Difference]: With dead ends: 160 [2021-05-02 16:14:04,546 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 16:14:04,546 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 234.6ms TimeCoverageRelationStatistics Valid=376, Invalid=616, Unknown=0, NotChecked=0, Total=992 [2021-05-02 16:14:04,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 16:14:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-05-02 16:14:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 117 states have internal predecessors, (133), 20 states have call successors, (20), 19 states have call predecessors, (20), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 16:14:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 171 transitions. [2021-05-02 16:14:04,552 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 171 transitions. Word has length 149 [2021-05-02 16:14:04,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:04,552 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 171 transitions. [2021-05-02 16:14:04,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2021-05-02 16:14:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 171 transitions. [2021-05-02 16:14:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-05-02 16:14:04,553 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:04,553 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:04,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 16:14:04,771 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:04,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2060864036, now seen corresponding path program 15 times [2021-05-02 16:14:04,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:04,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614604352] [2021-05-02 16:14:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:04,778 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:04,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190704863] [2021-05-02 16:14:04,779 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 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 16:14:04,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 16:14:04,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:04,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 16:14:04,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:04,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:04,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 30 proven. 975 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:05,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:05,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614604352] [2021-05-02 16:14:05,189 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:05,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190704863] [2021-05-02 16:14:05,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190704863] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:05,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:05,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-05-02 16:14:05,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292091101] [2021-05-02 16:14:05,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 16:14:05,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:05,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 16:14:05,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 16:14:05,192 INFO L87 Difference]: Start difference. First operand 155 states and 171 transitions. Second operand has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2021-05-02 16:14:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:05,504 INFO L93 Difference]: Finished difference Result 169 states and 186 transitions. [2021-05-02 16:14:05,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 16:14:05,505 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) Word has length 158 [2021-05-02 16:14:05,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:05,505 INFO L225 Difference]: With dead ends: 169 [2021-05-02 16:14:05,506 INFO L226 Difference]: Without dead ends: 164 [2021-05-02 16:14:05,506 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 302.4ms TimeCoverageRelationStatistics Valid=425, Invalid=697, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 16:14:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-02 16:14:05,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-05-02 16:14:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 124 states have internal predecessors, (141), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 16:14:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 181 transitions. [2021-05-02 16:14:05,512 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 181 transitions. Word has length 158 [2021-05-02 16:14:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:05,512 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 181 transitions. [2021-05-02 16:14:05,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2021-05-02 16:14:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 181 transitions. [2021-05-02 16:14:05,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 16:14:05,513 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:05,513 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:05,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:05,731 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:05,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:05,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1479991018, now seen corresponding path program 16 times [2021-05-02 16:14:05,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:05,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73951235] [2021-05-02 16:14:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:05,755 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:05,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147478272] [2021-05-02 16:14:05,755 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 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 16:14:05,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 16:14:05,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:05,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 16:14:05,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:06,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 32 proven. 1112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:06,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:06,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73951235] [2021-05-02 16:14:06,504 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:06,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147478272] [2021-05-02 16:14:06,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147478272] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:06,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:06,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-05-02 16:14:06,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384763155] [2021-05-02 16:14:06,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 16:14:06,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:06,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 16:14:06,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-05-02 16:14:06,505 INFO L87 Difference]: Start difference. First operand 164 states and 181 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2021-05-02 16:14:06,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:06,762 INFO L93 Difference]: Finished difference Result 178 states and 196 transitions. [2021-05-02 16:14:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 16:14:06,762 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) Word has length 167 [2021-05-02 16:14:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:06,763 INFO L225 Difference]: With dead ends: 178 [2021-05-02 16:14:06,763 INFO L226 Difference]: Without dead ends: 173 [2021-05-02 16:14:06,763 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 320.1ms TimeCoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 16:14:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-02 16:14:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-05-02 16:14:06,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 22 states have call successors, (22), 21 states have call predecessors, (22), 19 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 16:14:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2021-05-02 16:14:06,769 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 167 [2021-05-02 16:14:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:06,769 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2021-05-02 16:14:06,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2021-05-02 16:14:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2021-05-02 16:14:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-05-02 16:14:06,770 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:06,770 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:06,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:06,971 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:06,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:06,971 INFO L82 PathProgramCache]: Analyzing trace with hash 318093084, now seen corresponding path program 17 times [2021-05-02 16:14:06,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:06,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156404084] [2021-05-02 16:14:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:06,977 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:06,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109487522] [2021-05-02 16:14:06,977 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 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 16:14:07,071 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 16:14:07,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:07,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 16:14:07,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:07,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 34 proven. 1258 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:07,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:07,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156404084] [2021-05-02 16:14:07,628 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:07,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109487522] [2021-05-02 16:14:07,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109487522] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:07,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:07,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-02 16:14:07,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699162130] [2021-05-02 16:14:07,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 16:14:07,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:07,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 16:14:07,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 16:14:07,630 INFO L87 Difference]: Start difference. First operand 173 states and 191 transitions. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) [2021-05-02 16:14:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:07,887 INFO L93 Difference]: Finished difference Result 187 states and 206 transitions. [2021-05-02 16:14:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 16:14:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) Word has length 176 [2021-05-02 16:14:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:07,899 INFO L225 Difference]: With dead ends: 187 [2021-05-02 16:14:07,899 INFO L226 Difference]: Without dead ends: 182 [2021-05-02 16:14:07,899 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 367.8ms TimeCoverageRelationStatistics Valid=532, Invalid=874, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 16:14:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-02 16:14:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-05-02 16:14:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 138 states have (on average 1.1376811594202898) internal successors, (157), 138 states have internal predecessors, (157), 23 states have call successors, (23), 22 states have call predecessors, (23), 20 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 16:14:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 201 transitions. [2021-05-02 16:14:07,905 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 201 transitions. Word has length 176 [2021-05-02 16:14:07,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:07,906 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 201 transitions. [2021-05-02 16:14:07,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) [2021-05-02 16:14:07,906 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 201 transitions. [2021-05-02 16:14:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 16:14:07,906 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:07,906 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:08,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 16:14:08,117 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:08,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:08,117 INFO L82 PathProgramCache]: Analyzing trace with hash 994740182, now seen corresponding path program 18 times [2021-05-02 16:14:08,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:08,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938408191] [2021-05-02 16:14:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:08,122 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:08,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432990088] [2021-05-02 16:14:08,122 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 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 16:14:08,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 16:14:08,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:08,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 16:14:08,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:08,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 36 proven. 1413 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:08,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:08,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938408191] [2021-05-02 16:14:08,665 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:08,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432990088] [2021-05-02 16:14:08,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432990088] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:08,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:08,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-05-02 16:14:08,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690775118] [2021-05-02 16:14:08,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 16:14:08,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:08,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 16:14:08,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 16:14:08,666 INFO L87 Difference]: Start difference. First operand 182 states and 201 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-05-02 16:14:08,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:08,972 INFO L93 Difference]: Finished difference Result 196 states and 216 transitions. [2021-05-02 16:14:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 16:14:08,972 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) Word has length 185 [2021-05-02 16:14:08,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:08,973 INFO L225 Difference]: With dead ends: 196 [2021-05-02 16:14:08,973 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 16:14:08,974 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 343.7ms TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 16:14:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 16:14:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-05-02 16:14:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 145 states have internal predecessors, (165), 24 states have call successors, (24), 23 states have call predecessors, (24), 21 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 16:14:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2021-05-02 16:14:08,984 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 185 [2021-05-02 16:14:08,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:08,985 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2021-05-02 16:14:08,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-05-02 16:14:08,985 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2021-05-02 16:14:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-05-02 16:14:08,986 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:08,986 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:09,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 16:14:09,193 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:09,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1522264156, now seen corresponding path program 19 times [2021-05-02 16:14:09,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:09,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142387711] [2021-05-02 16:14:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:09,202 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:09,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836743574] [2021-05-02 16:14:09,202 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 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 16:14:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:09,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 16:14:09,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:09,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 38 proven. 1577 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:09,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:09,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142387711] [2021-05-02 16:14:09,745 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:09,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836743574] [2021-05-02 16:14:09,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836743574] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:09,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:09,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-05-02 16:14:09,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205051969] [2021-05-02 16:14:09,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 16:14:09,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:09,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 16:14:09,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 16:14:09,747 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2021-05-02 16:14:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:10,072 INFO L93 Difference]: Finished difference Result 205 states and 226 transitions. [2021-05-02 16:14:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 16:14:10,073 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) Word has length 194 [2021-05-02 16:14:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:10,074 INFO L225 Difference]: With dead ends: 205 [2021-05-02 16:14:10,074 INFO L226 Difference]: Without dead ends: 200 [2021-05-02 16:14:10,074 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 354.7ms TimeCoverageRelationStatistics Valid=651, Invalid=1071, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 16:14:10,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-02 16:14:10,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-02 16:14:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 152 states have (on average 1.138157894736842) internal successors, (173), 152 states have internal predecessors, (173), 25 states have call successors, (25), 24 states have call predecessors, (25), 22 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 16:14:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 221 transitions. [2021-05-02 16:14:10,081 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 221 transitions. Word has length 194 [2021-05-02 16:14:10,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:10,081 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 221 transitions. [2021-05-02 16:14:10,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2021-05-02 16:14:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 221 transitions. [2021-05-02 16:14:10,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 16:14:10,082 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:10,083 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:10,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:10,293 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:10,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:10,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1934081686, now seen corresponding path program 20 times [2021-05-02 16:14:10,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:10,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275734706] [2021-05-02 16:14:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:10,305 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:10,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925455156] [2021-05-02 16:14:10,305 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 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 16:14:10,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:14:10,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:10,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 16:14:10,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:10,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 40 proven. 1750 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:10,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:10,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275734706] [2021-05-02 16:14:10,814 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:10,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925455156] [2021-05-02 16:14:10,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925455156] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:10,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:10,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-05-02 16:14:10,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980595230] [2021-05-02 16:14:10,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 16:14:10,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:10,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 16:14:10,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 16:14:10,815 INFO L87 Difference]: Start difference. First operand 200 states and 221 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-05-02 16:14:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:11,148 INFO L93 Difference]: Finished difference Result 214 states and 236 transitions. [2021-05-02 16:14:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 16:14:11,148 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) Word has length 203 [2021-05-02 16:14:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:11,149 INFO L225 Difference]: With dead ends: 214 [2021-05-02 16:14:11,149 INFO L226 Difference]: Without dead ends: 209 [2021-05-02 16:14:11,149 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 371.1ms TimeCoverageRelationStatistics Valid=715, Invalid=1177, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 16:14:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-02 16:14:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-05-02 16:14:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 159 states have (on average 1.1383647798742138) internal successors, (181), 159 states have internal predecessors, (181), 26 states have call successors, (26), 25 states have call predecessors, (26), 23 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 16:14:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2021-05-02 16:14:11,156 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 203 [2021-05-02 16:14:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:11,156 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2021-05-02 16:14:11,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-05-02 16:14:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2021-05-02 16:14:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-05-02 16:14:11,157 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:11,157 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:11,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 16:14:11,365 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:11,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:11,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2075113060, now seen corresponding path program 21 times [2021-05-02 16:14:11,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:11,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171215971] [2021-05-02 16:14:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:11,375 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:11,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924495683] [2021-05-02 16:14:11,375 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 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 16:14:11,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 16:14:11,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:11,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 16:14:11,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:11,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 42 proven. 1932 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:11,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:11,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171215971] [2021-05-02 16:14:11,969 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:11,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924495683] [2021-05-02 16:14:11,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924495683] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:11,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:11,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-05-02 16:14:11,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942411071] [2021-05-02 16:14:11,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 16:14:11,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:11,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 16:14:11,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 16:14:11,970 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) [2021-05-02 16:14:12,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:12,379 INFO L93 Difference]: Finished difference Result 223 states and 246 transitions. [2021-05-02 16:14:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 16:14:12,379 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) Word has length 212 [2021-05-02 16:14:12,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:12,380 INFO L225 Difference]: With dead ends: 223 [2021-05-02 16:14:12,380 INFO L226 Difference]: Without dead ends: 218 [2021-05-02 16:14:12,381 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 442.3ms TimeCoverageRelationStatistics Valid=782, Invalid=1288, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 16:14:12,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-02 16:14:12,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-02 16:14:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 166 states have (on average 1.1385542168674698) internal successors, (189), 166 states have internal predecessors, (189), 27 states have call successors, (27), 26 states have call predecessors, (27), 24 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 16:14:12,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 241 transitions. [2021-05-02 16:14:12,387 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 241 transitions. Word has length 212 [2021-05-02 16:14:12,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:12,387 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 241 transitions. [2021-05-02 16:14:12,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) [2021-05-02 16:14:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 241 transitions. [2021-05-02 16:14:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 16:14:12,388 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:12,388 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:12,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:12,604 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:12,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:12,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1234385578, now seen corresponding path program 22 times [2021-05-02 16:14:12,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:12,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568722680] [2021-05-02 16:14:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:12,610 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:12,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809471799] [2021-05-02 16:14:12,610 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 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 16:14:12,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 16:14:12,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:12,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 16:14:12,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:12,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:12,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 44 proven. 2123 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:13,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:13,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568722680] [2021-05-02 16:14:13,175 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:13,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809471799] [2021-05-02 16:14:13,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809471799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:13,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:13,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-05-02 16:14:13,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276988015] [2021-05-02 16:14:13,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 16:14:13,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:13,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 16:14:13,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-02 16:14:13,177 INFO L87 Difference]: Start difference. First operand 218 states and 241 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) [2021-05-02 16:14:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:13,547 INFO L93 Difference]: Finished difference Result 232 states and 256 transitions. [2021-05-02 16:14:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 16:14:13,547 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) Word has length 221 [2021-05-02 16:14:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:13,548 INFO L225 Difference]: With dead ends: 232 [2021-05-02 16:14:13,548 INFO L226 Difference]: Without dead ends: 227 [2021-05-02 16:14:13,549 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 439.4ms TimeCoverageRelationStatistics Valid=852, Invalid=1404, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 16:14:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-02 16:14:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-05-02 16:14:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 173 states have (on average 1.138728323699422) internal successors, (197), 173 states have internal predecessors, (197), 28 states have call successors, (28), 27 states have call predecessors, (28), 25 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 16:14:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 251 transitions. [2021-05-02 16:14:13,557 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 251 transitions. Word has length 221 [2021-05-02 16:14:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:13,557 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 251 transitions. [2021-05-02 16:14:13,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) [2021-05-02 16:14:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 251 transitions. [2021-05-02 16:14:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-05-02 16:14:13,558 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:13,559 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:13,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 16:14:13,773 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:13,773 INFO L82 PathProgramCache]: Analyzing trace with hash -360260900, now seen corresponding path program 23 times [2021-05-02 16:14:13,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:13,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593413814] [2021-05-02 16:14:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:13,778 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:13,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233181784] [2021-05-02 16:14:13,778 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 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 16:14:13,893 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 16:14:13,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:13,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 16:14:13,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:13,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:13,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2373 backedges. 46 proven. 2323 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:14,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:14,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593413814] [2021-05-02 16:14:14,432 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:14,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233181784] [2021-05-02 16:14:14,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233181784] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:14,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:14,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-05-02 16:14:14,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387750017] [2021-05-02 16:14:14,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 16:14:14,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:14,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 16:14:14,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 16:14:14,433 INFO L87 Difference]: Start difference. First operand 227 states and 251 transitions. Second operand has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) [2021-05-02 16:14:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:14,854 INFO L93 Difference]: Finished difference Result 241 states and 266 transitions. [2021-05-02 16:14:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 16:14:14,855 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) Word has length 230 [2021-05-02 16:14:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:14,856 INFO L225 Difference]: With dead ends: 241 [2021-05-02 16:14:14,856 INFO L226 Difference]: Without dead ends: 236 [2021-05-02 16:14:14,857 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 510.5ms TimeCoverageRelationStatistics Valid=925, Invalid=1525, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 16:14:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-05-02 16:14:14,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-05-02 16:14:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 180 states have (on average 1.1388888888888888) internal successors, (205), 180 states have internal predecessors, (205), 29 states have call successors, (29), 28 states have call predecessors, (29), 26 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 16:14:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2021-05-02 16:14:14,869 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 230 [2021-05-02 16:14:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:14,870 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2021-05-02 16:14:14,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) [2021-05-02 16:14:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2021-05-02 16:14:14,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 16:14:14,871 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:14,871 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:15,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 16:14:15,081 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:15,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1738171370, now seen corresponding path program 24 times [2021-05-02 16:14:15,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:15,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056895248] [2021-05-02 16:14:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:15,086 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:15,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317107020] [2021-05-02 16:14:15,086 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 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 16:14:15,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 16:14:15,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:15,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 16:14:15,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:15,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 48 proven. 2532 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:15,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:15,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056895248] [2021-05-02 16:14:15,798 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:15,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317107020] [2021-05-02 16:14:15,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317107020] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:15,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:15,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-05-02 16:14:15,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673827605] [2021-05-02 16:14:15,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 16:14:15,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:15,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 16:14:15,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 16:14:15,799 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) [2021-05-02 16:14:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:16,239 INFO L93 Difference]: Finished difference Result 250 states and 276 transitions. [2021-05-02 16:14:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 16:14:16,239 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) Word has length 239 [2021-05-02 16:14:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:16,240 INFO L225 Difference]: With dead ends: 250 [2021-05-02 16:14:16,240 INFO L226 Difference]: Without dead ends: 245 [2021-05-02 16:14:16,241 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 531.0ms TimeCoverageRelationStatistics Valid=1001, Invalid=1651, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 16:14:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-05-02 16:14:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-05-02 16:14:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 187 states have (on average 1.13903743315508) internal successors, (213), 187 states have internal predecessors, (213), 30 states have call successors, (30), 29 states have call predecessors, (30), 27 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 16:14:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 271 transitions. [2021-05-02 16:14:16,247 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 271 transitions. Word has length 239 [2021-05-02 16:14:16,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:16,247 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 271 transitions. [2021-05-02 16:14:16,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) [2021-05-02 16:14:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 271 transitions. [2021-05-02 16:14:16,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-05-02 16:14:16,248 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:16,249 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 25, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:16,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 16:14:16,465 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:16,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1530108956, now seen corresponding path program 25 times [2021-05-02 16:14:16,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:16,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833672305] [2021-05-02 16:14:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:16,471 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:16,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926241828] [2021-05-02 16:14:16,471 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 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 16:14:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:16,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 16:14:16,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:16,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:16,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2804 backedges. 50 proven. 2750 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:17,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:17,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833672305] [2021-05-02 16:14:17,131 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:17,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926241828] [2021-05-02 16:14:17,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926241828] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:17,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:17,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-05-02 16:14:17,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562563961] [2021-05-02 16:14:17,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 16:14:17,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:17,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 16:14:17,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-02 16:14:17,132 INFO L87 Difference]: Start difference. First operand 245 states and 271 transitions. Second operand has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) [2021-05-02 16:14:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:17,597 INFO L93 Difference]: Finished difference Result 259 states and 286 transitions. [2021-05-02 16:14:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 16:14:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) Word has length 248 [2021-05-02 16:14:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:17,598 INFO L225 Difference]: With dead ends: 259 [2021-05-02 16:14:17,598 INFO L226 Difference]: Without dead ends: 254 [2021-05-02 16:14:17,599 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 566.3ms TimeCoverageRelationStatistics Valid=1080, Invalid=1782, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 16:14:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-05-02 16:14:17,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-05-02 16:14:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 194 states have (on average 1.1391752577319587) internal successors, (221), 194 states have internal predecessors, (221), 31 states have call successors, (31), 30 states have call predecessors, (31), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 16:14:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 281 transitions. [2021-05-02 16:14:17,606 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 281 transitions. Word has length 248 [2021-05-02 16:14:17,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:17,606 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 281 transitions. [2021-05-02 16:14:17,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) [2021-05-02 16:14:17,606 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 281 transitions. [2021-05-02 16:14:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 16:14:17,607 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:17,607 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 26, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:17,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 16:14:17,837 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:17,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1713487146, now seen corresponding path program 26 times [2021-05-02 16:14:17,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:17,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088528997] [2021-05-02 16:14:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:17,843 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:17,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387556939] [2021-05-02 16:14:17,843 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 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 16:14:17,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:14:17,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:17,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 16:14:17,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:17,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:17,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 52 proven. 2977 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:18,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:18,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088528997] [2021-05-02 16:14:18,551 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:18,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387556939] [2021-05-02 16:14:18,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387556939] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:18,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:18,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-05-02 16:14:18,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011754882] [2021-05-02 16:14:18,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 16:14:18,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:18,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 16:14:18,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 16:14:18,552 INFO L87 Difference]: Start difference. First operand 254 states and 281 transitions. Second operand has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2021-05-02 16:14:19,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:19,074 INFO L93 Difference]: Finished difference Result 268 states and 296 transitions. [2021-05-02 16:14:19,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 16:14:19,074 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) Word has length 257 [2021-05-02 16:14:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:19,075 INFO L225 Difference]: With dead ends: 268 [2021-05-02 16:14:19,075 INFO L226 Difference]: Without dead ends: 263 [2021-05-02 16:14:19,076 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 607.1ms TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 16:14:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-02 16:14:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-05-02 16:14:19,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 201 states have (on average 1.1393034825870647) internal successors, (229), 201 states have internal predecessors, (229), 32 states have call successors, (32), 31 states have call predecessors, (32), 29 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 16:14:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 291 transitions. [2021-05-02 16:14:19,083 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 291 transitions. Word has length 257 [2021-05-02 16:14:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:19,083 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 291 transitions. [2021-05-02 16:14:19,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2021-05-02 16:14:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 291 transitions. [2021-05-02 16:14:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-05-02 16:14:19,084 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:19,084 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:19,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:19,300 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1462406492, now seen corresponding path program 27 times [2021-05-02 16:14:19,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:19,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910406988] [2021-05-02 16:14:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:19,305 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:19,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849592154] [2021-05-02 16:14:19,305 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 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 16:14:19,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 16:14:19,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:19,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 16:14:19,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:19,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:19,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3271 backedges. 54 proven. 3213 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:20,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:20,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910406988] [2021-05-02 16:14:20,065 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:20,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849592154] [2021-05-02 16:14:20,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849592154] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:20,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:20,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-05-02 16:14:20,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654690658] [2021-05-02 16:14:20,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 16:14:20,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:20,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 16:14:20,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 16:14:20,072 INFO L87 Difference]: Start difference. First operand 263 states and 291 transitions. Second operand has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) [2021-05-02 16:14:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:20,604 INFO L93 Difference]: Finished difference Result 277 states and 306 transitions. [2021-05-02 16:14:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 16:14:20,605 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) Word has length 266 [2021-05-02 16:14:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:20,606 INFO L225 Difference]: With dead ends: 277 [2021-05-02 16:14:20,606 INFO L226 Difference]: Without dead ends: 272 [2021-05-02 16:14:20,607 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 634.4ms TimeCoverageRelationStatistics Valid=1247, Invalid=2059, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 16:14:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-02 16:14:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-02 16:14:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 208 states have (on average 1.1394230769230769) internal successors, (237), 208 states have internal predecessors, (237), 33 states have call successors, (33), 32 states have call predecessors, (33), 30 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 16:14:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2021-05-02 16:14:20,614 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 266 [2021-05-02 16:14:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:20,614 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2021-05-02 16:14:20,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) [2021-05-02 16:14:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2021-05-02 16:14:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-02 16:14:20,615 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:20,615 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:20,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:20,832 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:20,832 INFO L82 PathProgramCache]: Analyzing trace with hash -394085994, now seen corresponding path program 28 times [2021-05-02 16:14:20,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:20,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104022541] [2021-05-02 16:14:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:20,841 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:20,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147426784] [2021-05-02 16:14:20,841 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 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 16:14:20,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 16:14:20,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:20,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 16:14:20,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:20,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:20,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3518 backedges. 56 proven. 3458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:21,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:21,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104022541] [2021-05-02 16:14:21,628 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:21,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147426784] [2021-05-02 16:14:21,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147426784] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:21,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:21,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-05-02 16:14:21,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879088812] [2021-05-02 16:14:21,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 16:14:21,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:21,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 16:14:21,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-05-02 16:14:21,629 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2021-05-02 16:14:22,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:22,192 INFO L93 Difference]: Finished difference Result 286 states and 316 transitions. [2021-05-02 16:14:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 16:14:22,193 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) Word has length 275 [2021-05-02 16:14:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:22,194 INFO L225 Difference]: With dead ends: 286 [2021-05-02 16:14:22,194 INFO L226 Difference]: Without dead ends: 281 [2021-05-02 16:14:22,195 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 691.7ms TimeCoverageRelationStatistics Valid=1335, Invalid=2205, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 16:14:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-05-02 16:14:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-05-02 16:14:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 215 states have (on average 1.1395348837209303) internal successors, (245), 215 states have internal predecessors, (245), 34 states have call successors, (34), 33 states have call predecessors, (34), 31 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 16:14:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 311 transitions. [2021-05-02 16:14:22,202 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 311 transitions. Word has length 275 [2021-05-02 16:14:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:22,202 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 311 transitions. [2021-05-02 16:14:22,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2021-05-02 16:14:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 311 transitions. [2021-05-02 16:14:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-05-02 16:14:22,204 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:22,204 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:22,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:22,417 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:22,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1379905180, now seen corresponding path program 29 times [2021-05-02 16:14:22,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:22,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314431816] [2021-05-02 16:14:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:22,422 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:22,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688330338] [2021-05-02 16:14:22,423 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 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 16:14:22,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 16:14:22,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:22,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 16:14:22,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:22,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:22,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3774 backedges. 58 proven. 3712 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:23,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:23,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314431816] [2021-05-02 16:14:23,253 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:23,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688330338] [2021-05-02 16:14:23,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688330338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:23,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:23,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-05-02 16:14:23,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431022313] [2021-05-02 16:14:23,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 16:14:23,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:23,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 16:14:23,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 16:14:23,254 INFO L87 Difference]: Start difference. First operand 281 states and 311 transitions. Second operand has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) [2021-05-02 16:14:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:23,808 INFO L93 Difference]: Finished difference Result 295 states and 326 transitions. [2021-05-02 16:14:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 16:14:23,808 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) Word has length 284 [2021-05-02 16:14:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:23,809 INFO L225 Difference]: With dead ends: 295 [2021-05-02 16:14:23,809 INFO L226 Difference]: Without dead ends: 290 [2021-05-02 16:14:23,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 723.6ms TimeCoverageRelationStatistics Valid=1426, Invalid=2356, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 16:14:23,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-02 16:14:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-02 16:14:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 222 states have (on average 1.1396396396396395) internal successors, (253), 222 states have internal predecessors, (253), 35 states have call successors, (35), 34 states have call predecessors, (35), 32 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 16:14:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 321 transitions. [2021-05-02 16:14:23,817 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 321 transitions. Word has length 284 [2021-05-02 16:14:23,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:23,818 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 321 transitions. [2021-05-02 16:14:23,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) [2021-05-02 16:14:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 321 transitions. [2021-05-02 16:14:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 16:14:23,819 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:23,819 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:24,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 16:14:24,028 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:24,028 INFO L82 PathProgramCache]: Analyzing trace with hash 520028246, now seen corresponding path program 30 times [2021-05-02 16:14:24,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:24,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133369256] [2021-05-02 16:14:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:24,033 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:24,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558002116] [2021-05-02 16:14:24,033 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 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 16:14:24,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 16:14:24,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:24,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-02 16:14:24,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:24,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:24,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4039 backedges. 60 proven. 3975 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:25,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:25,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133369256] [2021-05-02 16:14:25,019 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:25,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558002116] [2021-05-02 16:14:25,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558002116] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:25,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:25,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-05-02 16:14:25,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280793321] [2021-05-02 16:14:25,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 16:14:25,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:25,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 16:14:25,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 16:14:25,021 INFO L87 Difference]: Start difference. First operand 290 states and 321 transitions. Second operand has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) [2021-05-02 16:14:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:25,635 INFO L93 Difference]: Finished difference Result 304 states and 336 transitions. [2021-05-02 16:14:25,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 16:14:25,636 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) Word has length 293 [2021-05-02 16:14:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:25,637 INFO L225 Difference]: With dead ends: 304 [2021-05-02 16:14:25,637 INFO L226 Difference]: Without dead ends: 299 [2021-05-02 16:14:25,638 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 780.9ms TimeCoverageRelationStatistics Valid=1520, Invalid=2512, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 16:14:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-05-02 16:14:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-05-02 16:14:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 229 states have (on average 1.1397379912663756) internal successors, (261), 229 states have internal predecessors, (261), 36 states have call successors, (36), 35 states have call predecessors, (36), 33 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 16:14:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 331 transitions. [2021-05-02 16:14:25,645 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 331 transitions. Word has length 293 [2021-05-02 16:14:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:25,645 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 331 transitions. [2021-05-02 16:14:25,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) [2021-05-02 16:14:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 331 transitions. [2021-05-02 16:14:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-05-02 16:14:25,647 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:25,647 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:25,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:25,857 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:25,857 INFO L82 PathProgramCache]: Analyzing trace with hash -213450788, now seen corresponding path program 31 times [2021-05-02 16:14:25,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:25,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197043229] [2021-05-02 16:14:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:25,862 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:25,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310595869] [2021-05-02 16:14:25,863 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 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 16:14:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:25,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 16:14:25,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:25,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:25,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:25,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:25,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:25,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:25,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4313 backedges. 62 proven. 4247 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:26,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:26,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197043229] [2021-05-02 16:14:26,704 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:26,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310595869] [2021-05-02 16:14:26,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310595869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:26,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:26,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-05-02 16:14:26,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801834107] [2021-05-02 16:14:26,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 16:14:26,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:26,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 16:14:26,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 16:14:26,705 INFO L87 Difference]: Start difference. First operand 299 states and 331 transitions. Second operand has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) [2021-05-02 16:14:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:27,315 INFO L93 Difference]: Finished difference Result 313 states and 346 transitions. [2021-05-02 16:14:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 16:14:27,316 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) Word has length 302 [2021-05-02 16:14:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:27,317 INFO L225 Difference]: With dead ends: 313 [2021-05-02 16:14:27,317 INFO L226 Difference]: Without dead ends: 308 [2021-05-02 16:14:27,318 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 793.9ms TimeCoverageRelationStatistics Valid=1617, Invalid=2673, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 16:14:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-05-02 16:14:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-05-02 16:14:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 236 states have (on average 1.1398305084745763) internal successors, (269), 236 states have internal predecessors, (269), 37 states have call successors, (37), 36 states have call predecessors, (37), 34 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 16:14:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 341 transitions. [2021-05-02 16:14:27,325 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 341 transitions. Word has length 302 [2021-05-02 16:14:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:27,325 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 341 transitions. [2021-05-02 16:14:27,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) [2021-05-02 16:14:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 341 transitions. [2021-05-02 16:14:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-05-02 16:14:27,326 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:27,327 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:27,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 16:14:27,537 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:27,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:27,537 INFO L82 PathProgramCache]: Analyzing trace with hash 83826454, now seen corresponding path program 32 times [2021-05-02 16:14:27,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:27,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987399884] [2021-05-02 16:14:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:27,543 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:27,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534734521] [2021-05-02 16:14:27,543 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 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 16:14:27,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:14:27,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:27,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 16:14:27,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:27,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:27,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4596 backedges. 64 proven. 4528 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:28,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:28,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987399884] [2021-05-02 16:14:28,481 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:28,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534734521] [2021-05-02 16:14:28,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534734521] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:28,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:28,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-05-02 16:14:28,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911850954] [2021-05-02 16:14:28,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 16:14:28,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:28,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 16:14:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 16:14:28,482 INFO L87 Difference]: Start difference. First operand 308 states and 341 transitions. Second operand has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2021-05-02 16:14:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:29,159 INFO L93 Difference]: Finished difference Result 322 states and 356 transitions. [2021-05-02 16:14:29,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 16:14:29,159 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) Word has length 311 [2021-05-02 16:14:29,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:29,160 INFO L225 Difference]: With dead ends: 322 [2021-05-02 16:14:29,160 INFO L226 Difference]: Without dead ends: 317 [2021-05-02 16:14:29,161 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 870.9ms TimeCoverageRelationStatistics Valid=1717, Invalid=2839, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 16:14:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-05-02 16:14:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-05-02 16:14:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 243 states have (on average 1.139917695473251) internal successors, (277), 243 states have internal predecessors, (277), 38 states have call successors, (38), 37 states have call predecessors, (38), 35 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 16:14:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 351 transitions. [2021-05-02 16:14:29,168 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 351 transitions. Word has length 311 [2021-05-02 16:14:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:29,169 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 351 transitions. [2021-05-02 16:14:29,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2021-05-02 16:14:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 351 transitions. [2021-05-02 16:14:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-05-02 16:14:29,170 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:29,170 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 33, 33, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:29,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:29,386 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:29,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:29,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1410629916, now seen corresponding path program 33 times [2021-05-02 16:14:29,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:29,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191957523] [2021-05-02 16:14:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:29,399 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:29,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467614410] [2021-05-02 16:14:29,399 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 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 16:14:29,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 16:14:29,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:29,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 16:14:29,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:29,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:29,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4888 backedges. 66 proven. 4818 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:30,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:30,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191957523] [2021-05-02 16:14:30,407 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:30,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467614410] [2021-05-02 16:14:30,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467614410] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:30,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:30,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-05-02 16:14:30,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389898711] [2021-05-02 16:14:30,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 16:14:30,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:30,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 16:14:30,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 16:14:30,409 INFO L87 Difference]: Start difference. First operand 317 states and 351 transitions. Second operand has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) [2021-05-02 16:14:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:31,073 INFO L93 Difference]: Finished difference Result 331 states and 366 transitions. [2021-05-02 16:14:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 16:14:31,073 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) Word has length 320 [2021-05-02 16:14:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:31,075 INFO L225 Difference]: With dead ends: 331 [2021-05-02 16:14:31,075 INFO L226 Difference]: Without dead ends: 326 [2021-05-02 16:14:31,075 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 896.9ms TimeCoverageRelationStatistics Valid=1820, Invalid=3010, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 16:14:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-05-02 16:14:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-05-02 16:14:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 250 states have (on average 1.14) internal successors, (285), 250 states have internal predecessors, (285), 39 states have call successors, (39), 38 states have call predecessors, (39), 36 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 16:14:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 361 transitions. [2021-05-02 16:14:31,083 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 361 transitions. Word has length 320 [2021-05-02 16:14:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:31,083 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 361 transitions. [2021-05-02 16:14:31,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) [2021-05-02 16:14:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 361 transitions. [2021-05-02 16:14:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-05-02 16:14:31,084 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:31,084 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 34, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:31,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 16:14:31,301 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:31,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:31,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1328479702, now seen corresponding path program 34 times [2021-05-02 16:14:31,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:31,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914251335] [2021-05-02 16:14:31,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:31,307 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:31,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668975950] [2021-05-02 16:14:31,307 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 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 16:14:31,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 16:14:31,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:31,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 16:14:31,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:31,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:31,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5189 backedges. 68 proven. 5117 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:32,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:32,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914251335] [2021-05-02 16:14:32,276 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:32,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668975950] [2021-05-02 16:14:32,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668975950] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:32,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:32,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-05-02 16:14:32,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412077198] [2021-05-02 16:14:32,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 16:14:32,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 16:14:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 16:14:32,278 INFO L87 Difference]: Start difference. First operand 326 states and 361 transitions. Second operand has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) [2021-05-02 16:14:32,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:32,971 INFO L93 Difference]: Finished difference Result 340 states and 376 transitions. [2021-05-02 16:14:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 16:14:32,972 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) Word has length 329 [2021-05-02 16:14:32,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:32,973 INFO L225 Difference]: With dead ends: 340 [2021-05-02 16:14:32,973 INFO L226 Difference]: Without dead ends: 335 [2021-05-02 16:14:32,973 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 944.5ms TimeCoverageRelationStatistics Valid=1926, Invalid=3186, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 16:14:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-05-02 16:14:32,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-05-02 16:14:32,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 257 states have (on average 1.140077821011673) internal successors, (293), 257 states have internal predecessors, (293), 40 states have call successors, (40), 39 states have call predecessors, (40), 37 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 16:14:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 371 transitions. [2021-05-02 16:14:32,981 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 371 transitions. Word has length 329 [2021-05-02 16:14:32,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:32,981 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 371 transitions. [2021-05-02 16:14:32,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) [2021-05-02 16:14:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 371 transitions. [2021-05-02 16:14:32,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-05-02 16:14:32,983 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:32,983 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:33,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 16:14:33,197 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:33,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1098658396, now seen corresponding path program 35 times [2021-05-02 16:14:33,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:33,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901827475] [2021-05-02 16:14:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:33,202 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:33,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020106923] [2021-05-02 16:14:33,202 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 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 16:14:33,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 16:14:33,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:33,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 16:14:33,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:33,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:33,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 70 proven. 5425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:34,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:34,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901827475] [2021-05-02 16:14:34,276 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:34,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020106923] [2021-05-02 16:14:34,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020106923] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:34,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:34,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2021-05-02 16:14:34,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456524279] [2021-05-02 16:14:34,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 16:14:34,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:34,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 16:14:34,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 16:14:34,278 INFO L87 Difference]: Start difference. First operand 335 states and 371 transitions. Second operand has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2021-05-02 16:14:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:35,034 INFO L93 Difference]: Finished difference Result 349 states and 386 transitions. [2021-05-02 16:14:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 16:14:35,034 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) Word has length 338 [2021-05-02 16:14:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:35,035 INFO L225 Difference]: With dead ends: 349 [2021-05-02 16:14:35,035 INFO L226 Difference]: Without dead ends: 344 [2021-05-02 16:14:35,036 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1011.9ms TimeCoverageRelationStatistics Valid=2035, Invalid=3367, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 16:14:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-05-02 16:14:35,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-05-02 16:14:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 264 states have (on average 1.1401515151515151) internal successors, (301), 264 states have internal predecessors, (301), 41 states have call successors, (41), 40 states have call predecessors, (41), 38 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 16:14:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 381 transitions. [2021-05-02 16:14:35,044 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 381 transitions. Word has length 338 [2021-05-02 16:14:35,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:35,044 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 381 transitions. [2021-05-02 16:14:35,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2021-05-02 16:14:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 381 transitions. [2021-05-02 16:14:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-05-02 16:14:35,045 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:35,045 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 36, 36, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:35,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 16:14:35,261 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1597682838, now seen corresponding path program 36 times [2021-05-02 16:14:35,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:35,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159214652] [2021-05-02 16:14:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:35,266 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:35,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853651323] [2021-05-02 16:14:35,266 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 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 16:14:35,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 16:14:35,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:35,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-02 16:14:35,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:35,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5818 backedges. 72 proven. 5742 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:36,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:36,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159214652] [2021-05-02 16:14:36,438 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:36,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853651323] [2021-05-02 16:14:36,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853651323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:36,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:36,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-05-02 16:14:36,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273740994] [2021-05-02 16:14:36,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 16:14:36,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:36,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 16:14:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 16:14:36,440 INFO L87 Difference]: Start difference. First operand 344 states and 381 transitions. Second operand has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) [2021-05-02 16:14:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:37,325 INFO L93 Difference]: Finished difference Result 358 states and 396 transitions. [2021-05-02 16:14:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 16:14:37,325 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) Word has length 347 [2021-05-02 16:14:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:37,326 INFO L225 Difference]: With dead ends: 358 [2021-05-02 16:14:37,326 INFO L226 Difference]: Without dead ends: 353 [2021-05-02 16:14:37,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1136.8ms TimeCoverageRelationStatistics Valid=2147, Invalid=3553, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 16:14:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-05-02 16:14:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-05-02 16:14:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 271 states have (on average 1.1402214022140222) internal successors, (309), 271 states have internal predecessors, (309), 42 states have call successors, (42), 41 states have call predecessors, (42), 39 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 16:14:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 391 transitions. [2021-05-02 16:14:37,335 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 391 transitions. Word has length 347 [2021-05-02 16:14:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:37,335 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 391 transitions. [2021-05-02 16:14:37,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) [2021-05-02 16:14:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 391 transitions. [2021-05-02 16:14:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-05-02 16:14:37,337 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:37,337 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 37, 37, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:37,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 16:14:37,551 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:37,552 INFO L82 PathProgramCache]: Analyzing trace with hash 2068976540, now seen corresponding path program 37 times [2021-05-02 16:14:37,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:37,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836420127] [2021-05-02 16:14:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:37,557 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:37,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224077738] [2021-05-02 16:14:37,557 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 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 16:14:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:37,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 16:14:37,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:37,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:37,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6146 backedges. 74 proven. 6068 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:38,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:38,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836420127] [2021-05-02 16:14:38,670 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:38,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224077738] [2021-05-02 16:14:38,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224077738] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:38,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:38,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-05-02 16:14:38,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728172171] [2021-05-02 16:14:38,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 16:14:38,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:38,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 16:14:38,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 16:14:38,671 INFO L87 Difference]: Start difference. First operand 353 states and 391 transitions. Second operand has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) [2021-05-02 16:14:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:39,498 INFO L93 Difference]: Finished difference Result 367 states and 406 transitions. [2021-05-02 16:14:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 16:14:39,499 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) Word has length 356 [2021-05-02 16:14:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:39,500 INFO L225 Difference]: With dead ends: 367 [2021-05-02 16:14:39,500 INFO L226 Difference]: Without dead ends: 362 [2021-05-02 16:14:39,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1120.8ms TimeCoverageRelationStatistics Valid=2262, Invalid=3744, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 16:14:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-05-02 16:14:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-05-02 16:14:39,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 278 states have (on average 1.1402877697841727) internal successors, (317), 278 states have internal predecessors, (317), 43 states have call successors, (43), 42 states have call predecessors, (43), 40 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 16:14:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 401 transitions. [2021-05-02 16:14:39,508 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 401 transitions. Word has length 356 [2021-05-02 16:14:39,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:39,509 INFO L480 AbstractCegarLoop]: Abstraction has 362 states and 401 transitions. [2021-05-02 16:14:39,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) [2021-05-02 16:14:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 401 transitions. [2021-05-02 16:14:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-05-02 16:14:39,510 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:39,510 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:39,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:39,725 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:39,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:39,725 INFO L82 PathProgramCache]: Analyzing trace with hash 63847254, now seen corresponding path program 38 times [2021-05-02 16:14:39,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:39,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540846185] [2021-05-02 16:14:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:39,730 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:39,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740884694] [2021-05-02 16:14:39,730 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 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 16:14:39,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:14:39,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:39,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 16:14:39,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:39,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:39,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6483 backedges. 76 proven. 6403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:40,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:40,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540846185] [2021-05-02 16:14:40,885 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:40,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740884694] [2021-05-02 16:14:40,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740884694] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:40,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:40,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-05-02 16:14:40,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127831583] [2021-05-02 16:14:40,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 16:14:40,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:40,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 16:14:40,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 16:14:40,886 INFO L87 Difference]: Start difference. First operand 362 states and 401 transitions. Second operand has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) [2021-05-02 16:14:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:41,828 INFO L93 Difference]: Finished difference Result 376 states and 416 transitions. [2021-05-02 16:14:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 16:14:41,828 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) Word has length 365 [2021-05-02 16:14:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:41,829 INFO L225 Difference]: With dead ends: 376 [2021-05-02 16:14:41,829 INFO L226 Difference]: Without dead ends: 371 [2021-05-02 16:14:41,830 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1207.1ms TimeCoverageRelationStatistics Valid=2380, Invalid=3940, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 16:14:41,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-05-02 16:14:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-05-02 16:14:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.1403508771929824) internal successors, (325), 285 states have internal predecessors, (325), 44 states have call successors, (44), 43 states have call predecessors, (44), 41 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 16:14:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 411 transitions. [2021-05-02 16:14:41,838 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 411 transitions. Word has length 365 [2021-05-02 16:14:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:41,839 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 411 transitions. [2021-05-02 16:14:41,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) [2021-05-02 16:14:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 411 transitions. [2021-05-02 16:14:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-05-02 16:14:41,840 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:41,840 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 39, 39, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:42,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-02 16:14:42,057 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:42,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:42,057 INFO L82 PathProgramCache]: Analyzing trace with hash -194370340, now seen corresponding path program 39 times [2021-05-02 16:14:42,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:42,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411512246] [2021-05-02 16:14:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:42,062 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:42,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023912827] [2021-05-02 16:14:42,062 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 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 16:14:42,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 16:14:42,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:42,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 16:14:42,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:42,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:42,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6829 backedges. 78 proven. 6747 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:43,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:43,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411512246] [2021-05-02 16:14:43,350 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:43,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023912827] [2021-05-02 16:14:43,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023912827] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:43,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:43,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2021-05-02 16:14:43,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111727738] [2021-05-02 16:14:43,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 16:14:43,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:43,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 16:14:43,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 16:14:43,352 INFO L87 Difference]: Start difference. First operand 371 states and 411 transitions. Second operand has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-05-02 16:14:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:44,401 INFO L93 Difference]: Finished difference Result 385 states and 426 transitions. [2021-05-02 16:14:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 16:14:44,401 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) Word has length 374 [2021-05-02 16:14:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:44,403 INFO L225 Difference]: With dead ends: 385 [2021-05-02 16:14:44,403 INFO L226 Difference]: Without dead ends: 380 [2021-05-02 16:14:44,403 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1340.3ms TimeCoverageRelationStatistics Valid=2501, Invalid=4141, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 16:14:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-05-02 16:14:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-05-02 16:14:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 292 states have (on average 1.1404109589041096) internal successors, (333), 292 states have internal predecessors, (333), 45 states have call successors, (45), 44 states have call predecessors, (45), 42 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 16:14:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 421 transitions. [2021-05-02 16:14:44,411 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 421 transitions. Word has length 374 [2021-05-02 16:14:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:44,412 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 421 transitions. [2021-05-02 16:14:44,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-05-02 16:14:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 421 transitions. [2021-05-02 16:14:44,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-05-02 16:14:44,413 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:44,413 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 40, 40, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:44,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:44,629 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:44,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:44,629 INFO L82 PathProgramCache]: Analyzing trace with hash 949326358, now seen corresponding path program 40 times [2021-05-02 16:14:44,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:44,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518592285] [2021-05-02 16:14:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:44,634 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:44,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370778188] [2021-05-02 16:14:44,634 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 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 16:14:44,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 16:14:44,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:44,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 16:14:44,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:44,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:44,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7184 backedges. 80 proven. 7100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:45,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:45,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518592285] [2021-05-02 16:14:45,865 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:45,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370778188] [2021-05-02 16:14:45,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370778188] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:45,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:45,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-05-02 16:14:45,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258450903] [2021-05-02 16:14:45,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 16:14:45,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:45,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 16:14:45,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 16:14:45,866 INFO L87 Difference]: Start difference. First operand 380 states and 421 transitions. Second operand has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2021-05-02 16:14:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:46,825 INFO L93 Difference]: Finished difference Result 394 states and 436 transitions. [2021-05-02 16:14:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 16:14:46,826 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) Word has length 383 [2021-05-02 16:14:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:46,827 INFO L225 Difference]: With dead ends: 394 [2021-05-02 16:14:46,827 INFO L226 Difference]: Without dead ends: 389 [2021-05-02 16:14:46,828 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1300.5ms TimeCoverageRelationStatistics Valid=2625, Invalid=4347, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 16:14:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-05-02 16:14:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-05-02 16:14:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 299 states have (on average 1.140468227424749) internal successors, (341), 299 states have internal predecessors, (341), 46 states have call successors, (46), 45 states have call predecessors, (46), 43 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 16:14:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 431 transitions. [2021-05-02 16:14:46,840 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 431 transitions. Word has length 383 [2021-05-02 16:14:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:46,840 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 431 transitions. [2021-05-02 16:14:46,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2021-05-02 16:14:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 431 transitions. [2021-05-02 16:14:46,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-05-02 16:14:46,843 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:46,843 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 41, 41, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:47,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:47,057 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash 311977500, now seen corresponding path program 41 times [2021-05-02 16:14:47,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:47,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144920601] [2021-05-02 16:14:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:47,063 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:47,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694505417] [2021-05-02 16:14:47,063 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 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 16:14:47,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 16:14:47,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:47,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 16:14:47,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:47,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:47,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7548 backedges. 82 proven. 7462 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:48,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:48,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144920601] [2021-05-02 16:14:48,393 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:48,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694505417] [2021-05-02 16:14:48,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694505417] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:48,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:48,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-05-02 16:14:48,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169059831] [2021-05-02 16:14:48,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 16:14:48,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:48,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 16:14:48,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 16:14:48,395 INFO L87 Difference]: Start difference. First operand 389 states and 431 transitions. Second operand has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) [2021-05-02 16:14:49,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:49,447 INFO L93 Difference]: Finished difference Result 403 states and 446 transitions. [2021-05-02 16:14:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 16:14:49,448 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) Word has length 392 [2021-05-02 16:14:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:49,449 INFO L225 Difference]: With dead ends: 403 [2021-05-02 16:14:49,449 INFO L226 Difference]: Without dead ends: 398 [2021-05-02 16:14:49,449 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1402.2ms TimeCoverageRelationStatistics Valid=2752, Invalid=4558, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 16:14:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-05-02 16:14:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-05-02 16:14:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 306 states have (on average 1.1405228758169934) internal successors, (349), 306 states have internal predecessors, (349), 47 states have call successors, (47), 46 states have call predecessors, (47), 44 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 16:14:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 441 transitions. [2021-05-02 16:14:49,460 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 441 transitions. Word has length 392 [2021-05-02 16:14:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:49,460 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 441 transitions. [2021-05-02 16:14:49,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) [2021-05-02 16:14:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 441 transitions. [2021-05-02 16:14:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-05-02 16:14:49,462 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:49,462 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:49,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 16:14:49,678 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:49,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:49,678 INFO L82 PathProgramCache]: Analyzing trace with hash -432228138, now seen corresponding path program 42 times [2021-05-02 16:14:49,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:49,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957955036] [2021-05-02 16:14:49,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:49,683 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:49,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711742246] [2021-05-02 16:14:49,684 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 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 16:14:49,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 16:14:49,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:49,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 16:14:49,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:49,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:49,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:49,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:49,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:49,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:49,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:50,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 84 proven. 7833 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:51,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:51,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957955036] [2021-05-02 16:14:51,202 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:51,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711742246] [2021-05-02 16:14:51,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711742246] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:51,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:51,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-05-02 16:14:51,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311270175] [2021-05-02 16:14:51,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 16:14:51,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:51,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 16:14:51,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 16:14:51,203 INFO L87 Difference]: Start difference. First operand 398 states and 441 transitions. Second operand has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) [2021-05-02 16:14:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:52,316 INFO L93 Difference]: Finished difference Result 412 states and 456 transitions. [2021-05-02 16:14:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 16:14:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) Word has length 401 [2021-05-02 16:14:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:52,318 INFO L225 Difference]: With dead ends: 412 [2021-05-02 16:14:52,318 INFO L226 Difference]: Without dead ends: 407 [2021-05-02 16:14:52,318 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1529.2ms TimeCoverageRelationStatistics Valid=2882, Invalid=4774, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 16:14:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-05-02 16:14:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-05-02 16:14:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 313 states have (on average 1.1405750798722045) internal successors, (357), 313 states have internal predecessors, (357), 48 states have call successors, (48), 47 states have call predecessors, (48), 45 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 16:14:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 451 transitions. [2021-05-02 16:14:52,327 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 451 transitions. Word has length 401 [2021-05-02 16:14:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:52,327 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 451 transitions. [2021-05-02 16:14:52,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) [2021-05-02 16:14:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 451 transitions. [2021-05-02 16:14:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2021-05-02 16:14:52,329 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:52,329 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 43, 43, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:52,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 16:14:52,545 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:52,545 INFO L82 PathProgramCache]: Analyzing trace with hash -290400420, now seen corresponding path program 43 times [2021-05-02 16:14:52,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:52,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068797856] [2021-05-02 16:14:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:52,550 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:52,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917645275] [2021-05-02 16:14:52,550 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 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 16:14:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:14:52,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 16:14:52,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:52,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:52,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8303 backedges. 86 proven. 8213 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:53,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:53,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068797856] [2021-05-02 16:14:53,919 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:53,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917645275] [2021-05-02 16:14:53,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917645275] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:53,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:53,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2021-05-02 16:14:53,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129494355] [2021-05-02 16:14:53,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 16:14:53,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:53,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 16:14:53,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 16:14:53,920 INFO L87 Difference]: Start difference. First operand 407 states and 451 transitions. Second operand has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) [2021-05-02 16:14:54,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:54,997 INFO L93 Difference]: Finished difference Result 421 states and 466 transitions. [2021-05-02 16:14:54,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 16:14:54,997 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) Word has length 410 [2021-05-02 16:14:54,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:54,999 INFO L225 Difference]: With dead ends: 421 [2021-05-02 16:14:54,999 INFO L226 Difference]: Without dead ends: 416 [2021-05-02 16:14:54,999 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 1489.5ms TimeCoverageRelationStatistics Valid=3015, Invalid=4995, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 16:14:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-05-02 16:14:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2021-05-02 16:14:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 320 states have (on average 1.140625) internal successors, (365), 320 states have internal predecessors, (365), 49 states have call successors, (49), 48 states have call predecessors, (49), 46 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 16:14:55,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 461 transitions. [2021-05-02 16:14:55,008 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 461 transitions. Word has length 410 [2021-05-02 16:14:55,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:55,008 INFO L480 AbstractCegarLoop]: Abstraction has 416 states and 461 transitions. [2021-05-02 16:14:55,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) [2021-05-02 16:14:55,008 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 461 transitions. [2021-05-02 16:14:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-05-02 16:14:55,010 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:55,010 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 44, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:55,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 16:14:55,225 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:55,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1569738858, now seen corresponding path program 44 times [2021-05-02 16:14:55,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:55,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26792323] [2021-05-02 16:14:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:55,232 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:55,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365136816] [2021-05-02 16:14:55,232 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 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 16:14:55,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:14:55,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:55,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 16:14:55,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:55,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:55,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8694 backedges. 88 proven. 8602 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:56,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:56,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26792323] [2021-05-02 16:14:56,689 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:56,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365136816] [2021-05-02 16:14:56,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365136816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:56,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:56,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2021-05-02 16:14:56,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232029319] [2021-05-02 16:14:56,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 16:14:56,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:56,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 16:14:56,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 16:14:56,706 INFO L87 Difference]: Start difference. First operand 416 states and 461 transitions. Second operand has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) [2021-05-02 16:14:57,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:14:57,841 INFO L93 Difference]: Finished difference Result 430 states and 476 transitions. [2021-05-02 16:14:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 16:14:57,842 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) Word has length 419 [2021-05-02 16:14:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:14:57,843 INFO L225 Difference]: With dead ends: 430 [2021-05-02 16:14:57,843 INFO L226 Difference]: Without dead ends: 425 [2021-05-02 16:14:57,844 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 1587.6ms TimeCoverageRelationStatistics Valid=3151, Invalid=5221, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 16:14:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-05-02 16:14:57,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2021-05-02 16:14:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 327 states have (on average 1.1406727828746177) internal successors, (373), 327 states have internal predecessors, (373), 50 states have call successors, (50), 49 states have call predecessors, (50), 47 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-02 16:14:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 471 transitions. [2021-05-02 16:14:57,853 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 471 transitions. Word has length 419 [2021-05-02 16:14:57,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:14:57,853 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 471 transitions. [2021-05-02 16:14:57,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) [2021-05-02 16:14:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 471 transitions. [2021-05-02 16:14:57,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-05-02 16:14:57,855 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:14:57,855 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 45, 45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:14:58,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:14:58,069 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:14:58,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:14:58,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1803061092, now seen corresponding path program 45 times [2021-05-02 16:14:58,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:14:58,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236886600] [2021-05-02 16:14:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:14:58,074 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:14:58,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619535319] [2021-05-02 16:14:58,074 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 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 16:14:58,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 16:14:58,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:14:58,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-02 16:14:58,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:14:58,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:58,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:14:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9094 backedges. 90 proven. 9000 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:14:59,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:14:59,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236886600] [2021-05-02 16:14:59,678 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:14:59,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619535319] [2021-05-02 16:14:59,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619535319] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:14:59,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:14:59,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2021-05-02 16:14:59,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244085901] [2021-05-02 16:14:59,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 16:14:59,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:14:59,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 16:14:59,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 16:14:59,680 INFO L87 Difference]: Start difference. First operand 425 states and 471 transitions. Second operand has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) [2021-05-02 16:15:00,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:15:00,830 INFO L93 Difference]: Finished difference Result 439 states and 486 transitions. [2021-05-02 16:15:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 16:15:00,830 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) Word has length 428 [2021-05-02 16:15:00,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:15:00,832 INFO L225 Difference]: With dead ends: 439 [2021-05-02 16:15:00,832 INFO L226 Difference]: Without dead ends: 434 [2021-05-02 16:15:00,833 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1620.7ms TimeCoverageRelationStatistics Valid=3290, Invalid=5452, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 16:15:00,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-05-02 16:15:00,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-05-02 16:15:00,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 334 states have (on average 1.1407185628742516) internal successors, (381), 334 states have internal predecessors, (381), 51 states have call successors, (51), 50 states have call predecessors, (51), 48 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-02 16:15:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 481 transitions. [2021-05-02 16:15:00,841 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 481 transitions. Word has length 428 [2021-05-02 16:15:00,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:15:00,842 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 481 transitions. [2021-05-02 16:15:00,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) [2021-05-02 16:15:00,842 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 481 transitions. [2021-05-02 16:15:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-05-02 16:15:00,849 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:15:00,849 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:15:01,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 16:15:01,065 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:15:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:15:01,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1876588118, now seen corresponding path program 46 times [2021-05-02 16:15:01,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:15:01,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270797971] [2021-05-02 16:15:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:15:01,073 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:15:01,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241481329] [2021-05-02 16:15:01,073 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 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 16:15:01,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 16:15:01,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:15:01,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 16:15:01,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:15:01,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:01,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9503 backedges. 92 proven. 9407 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:15:02,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:15:02,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270797971] [2021-05-02 16:15:02,821 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:15:02,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241481329] [2021-05-02 16:15:02,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241481329] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:15:02,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:15:02,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-05-02 16:15:02,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085529499] [2021-05-02 16:15:02,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 16:15:02,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:15:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 16:15:02,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 16:15:02,823 INFO L87 Difference]: Start difference. First operand 434 states and 481 transitions. Second operand has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) [2021-05-02 16:15:04,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:15:04,199 INFO L93 Difference]: Finished difference Result 448 states and 496 transitions. [2021-05-02 16:15:04,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 16:15:04,199 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) Word has length 437 [2021-05-02 16:15:04,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:15:04,200 INFO L225 Difference]: With dead ends: 448 [2021-05-02 16:15:04,200 INFO L226 Difference]: Without dead ends: 443 [2021-05-02 16:15:04,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1976.0ms TimeCoverageRelationStatistics Valid=3432, Invalid=5688, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 16:15:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-05-02 16:15:04,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2021-05-02 16:15:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 341 states have (on average 1.1407624633431086) internal successors, (389), 341 states have internal predecessors, (389), 52 states have call successors, (52), 51 states have call predecessors, (52), 49 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-02 16:15:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 491 transitions. [2021-05-02 16:15:04,210 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 491 transitions. Word has length 437 [2021-05-02 16:15:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:15:04,210 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 491 transitions. [2021-05-02 16:15:04,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) [2021-05-02 16:15:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 491 transitions. [2021-05-02 16:15:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-05-02 16:15:04,212 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:15:04,212 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:15:04,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 16:15:04,413 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:15:04,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:15:04,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1123043804, now seen corresponding path program 47 times [2021-05-02 16:15:04,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:15:04,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659449483] [2021-05-02 16:15:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:15:04,419 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:15:04,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787037942] [2021-05-02 16:15:04,419 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 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 16:15:04,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-02 16:15:04,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:15:04,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 16:15:04,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:15:04,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:04,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:05,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9921 backedges. 94 proven. 9823 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:15:06,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:15:06,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659449483] [2021-05-02 16:15:06,357 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:15:06,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787037942] [2021-05-02 16:15:06,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787037942] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:15:06,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:15:06,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-05-02 16:15:06,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668774232] [2021-05-02 16:15:06,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 16:15:06,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:15:06,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 16:15:06,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 16:15:06,359 INFO L87 Difference]: Start difference. First operand 443 states and 491 transitions. Second operand has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) [2021-05-02 16:15:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:15:07,750 INFO L93 Difference]: Finished difference Result 457 states and 506 transitions. [2021-05-02 16:15:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 16:15:07,753 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) Word has length 446 [2021-05-02 16:15:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:15:07,755 INFO L225 Difference]: With dead ends: 457 [2021-05-02 16:15:07,755 INFO L226 Difference]: Without dead ends: 452 [2021-05-02 16:15:07,756 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 2025.2ms TimeCoverageRelationStatistics Valid=3577, Invalid=5929, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 16:15:07,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-05-02 16:15:07,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-05-02 16:15:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 348 states have (on average 1.1408045977011494) internal successors, (397), 348 states have internal predecessors, (397), 53 states have call successors, (53), 52 states have call predecessors, (53), 50 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-02 16:15:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 501 transitions. [2021-05-02 16:15:07,769 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 501 transitions. Word has length 446 [2021-05-02 16:15:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:15:07,770 INFO L480 AbstractCegarLoop]: Abstraction has 452 states and 501 transitions. [2021-05-02 16:15:07,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) [2021-05-02 16:15:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 501 transitions. [2021-05-02 16:15:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-05-02 16:15:07,772 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:15:07,772 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 48, 48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:15:07,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:15:07,979 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:15:07,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:15:07,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2116619542, now seen corresponding path program 48 times [2021-05-02 16:15:07,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:15:07,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631357311] [2021-05-02 16:15:07,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:15:07,987 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:15:07,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437414338] [2021-05-02 16:15:07,987 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 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 16:15:08,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-02 16:15:08,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 16:15:08,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-02 16:15:08,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:15:08,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:08,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10348 backedges. 96 proven. 10248 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:15:09,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:15:09,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631357311] [2021-05-02 16:15:09,959 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:15:09,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437414338] [2021-05-02 16:15:09,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437414338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:15:09,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:15:09,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2021-05-02 16:15:09,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598880211] [2021-05-02 16:15:09,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 16:15:09,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:15:09,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 16:15:09,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 16:15:09,967 INFO L87 Difference]: Start difference. First operand 452 states and 501 transitions. Second operand has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) [2021-05-02 16:15:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:15:11,487 INFO L93 Difference]: Finished difference Result 466 states and 516 transitions. [2021-05-02 16:15:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 16:15:11,487 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) Word has length 455 [2021-05-02 16:15:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:15:11,489 INFO L225 Difference]: With dead ends: 466 [2021-05-02 16:15:11,489 INFO L226 Difference]: Without dead ends: 461 [2021-05-02 16:15:11,490 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 2076.3ms TimeCoverageRelationStatistics Valid=3725, Invalid=6175, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 16:15:11,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-05-02 16:15:11,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2021-05-02 16:15:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 355 states have (on average 1.1408450704225352) internal successors, (405), 355 states have internal predecessors, (405), 54 states have call successors, (54), 53 states have call predecessors, (54), 51 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-02 16:15:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 511 transitions. [2021-05-02 16:15:11,520 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 511 transitions. Word has length 455 [2021-05-02 16:15:11,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:15:11,520 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 511 transitions. [2021-05-02 16:15:11,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) [2021-05-02 16:15:11,520 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 511 transitions. [2021-05-02 16:15:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-05-02 16:15:11,522 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:15:11,522 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 49, 49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:15:11,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-05-02 16:15:11,733 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:15:11,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:15:11,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1413526756, now seen corresponding path program 49 times [2021-05-02 16:15:11,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:15:11,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362086819] [2021-05-02 16:15:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:15:11,739 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:15:11,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191823652] [2021-05-02 16:15:11,739 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 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 16:15:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:15:11,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 16:15:11,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:15:11,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:11,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:12,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:15:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10784 backedges. 98 proven. 10682 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 16:15:13,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:15:13,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362086819] [2021-05-02 16:15:13,810 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:15:13,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191823652] [2021-05-02 16:15:13,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191823652] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:15:13,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:15:13,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2021-05-02 16:15:13,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335897397] [2021-05-02 16:15:13,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 16:15:13,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:15:13,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 16:15:13,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 16:15:13,811 INFO L87 Difference]: Start difference. First operand 461 states and 511 transitions. Second operand has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) [2021-05-02 16:15:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:15:15,462 INFO L93 Difference]: Finished difference Result 475 states and 526 transitions. [2021-05-02 16:15:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 16:15:15,463 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) Word has length 464 [2021-05-02 16:15:15,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:15:15,465 INFO L225 Difference]: With dead ends: 475 [2021-05-02 16:15:15,465 INFO L226 Difference]: Without dead ends: 470 [2021-05-02 16:15:15,465 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2416.1ms TimeCoverageRelationStatistics Valid=3876, Invalid=6426, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 16:15:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-05-02 16:15:15,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-05-02 16:15:15,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 362 states have (on average 1.1408839779005524) internal successors, (413), 362 states have internal predecessors, (413), 55 states have call successors, (55), 54 states have call predecessors, (55), 52 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-02 16:15:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 521 transitions. [2021-05-02 16:15:15,474 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 521 transitions. Word has length 464 [2021-05-02 16:15:15,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:15:15,475 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 521 transitions. [2021-05-02 16:15:15,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) [2021-05-02 16:15:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 521 transitions. [2021-05-02 16:15:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-05-02 16:15:15,477 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:15:15,477 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 50, 50, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:15:15,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:15:15,693 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:15:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:15:15,694 INFO L82 PathProgramCache]: Analyzing trace with hash -368610346, now seen corresponding path program 50 times [2021-05-02 16:15:15,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:15:15,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157103662] [2021-05-02 16:15:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:15:15,699 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:15:15,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561159972] [2021-05-02 16:15:15,699 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 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 16:15:15,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:15:15,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-05-02 16:15:15,887 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 16:15:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 16:15:15,989 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 16:15:16,619 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 16:15:16,619 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 16:15:16,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-02 16:15:16,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 04:15:16 BoogieIcfgContainer [2021-05-02 16:15:16,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 16:15:16,955 INFO L168 Benchmark]: Toolchain (without parser) took 83163.09 ms. Allocated memory was 183.5 MB in the beginning and 458.2 MB in the end (delta: 274.7 MB). Free memory was 148.0 MB in the beginning and 306.6 MB in the end (delta: -158.6 MB). Peak memory consumption was 116.8 MB. Max. memory is 8.0 GB. [2021-05-02 16:15:16,955 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 183.5 MB. Free memory is still 164.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 16:15:16,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.23 ms. Allocated memory is still 183.5 MB. Free memory was 147.8 MB in the beginning and 138.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 16:15:16,955 INFO L168 Benchmark]: Boogie Preprocessor took 62.48 ms. Allocated memory is still 183.5 MB. Free memory was 138.1 MB in the beginning and 167.7 MB in the end (delta: -29.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2021-05-02 16:15:16,955 INFO L168 Benchmark]: RCFGBuilder took 239.83 ms. Allocated memory is still 183.5 MB. Free memory was 167.2 MB in the beginning and 152.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 16:15:16,955 INFO L168 Benchmark]: TraceAbstraction took 82678.70 ms. Allocated memory was 183.5 MB in the beginning and 458.2 MB in the end (delta: 274.7 MB). Free memory was 152.0 MB in the beginning and 306.6 MB in the end (delta: -154.6 MB). Peak memory consumption was 121.6 MB. Max. memory is 8.0 GB. [2021-05-02 16:15:16,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 183.5 MB. Free memory is still 164.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 176.23 ms. Allocated memory is still 183.5 MB. Free memory was 147.8 MB in the beginning and 138.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.48 ms. Allocated memory is still 183.5 MB. Free memory was 138.1 MB in the beginning and 167.7 MB in the end (delta: -29.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 239.83 ms. Allocated memory is still 183.5 MB. Free memory was 167.2 MB in the beginning and 152.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 82678.70 ms. Allocated memory was 183.5 MB in the beginning and 458.2 MB in the end (delta: 274.7 MB). Free memory was 152.0 MB in the beginning and 306.6 MB in the end (delta: -154.6 MB). Peak memory consumption was 121.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [\old(counter)=52, counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [\old(counter)=0, counter=0, x1=51, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [\old(counter)=0, counter=0, x1=51, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [\old(counter)=0, counter=0, x1=51, x2=1, y1=0, y2=0, y3=51] [L36] EXPR counter++ VAL [\old(counter)=0, counter=1, counter++=0, x1=51, x2=1, y1=0, y2=0, y3=51] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=0, y2=0, y3=51] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=0, y2=0, y3=51] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=1, y2=0, y3=50] [L36] EXPR counter++ VAL [\old(counter)=0, counter=2, counter++=1, x1=51, x2=1, y1=1, y2=0, y3=50] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=1, y2=0, y3=50] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=1, y2=0, y3=50] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=2, y2=0, y3=49] [L36] EXPR counter++ VAL [\old(counter)=0, counter=3, counter++=2, x1=51, x2=1, y1=2, y2=0, y3=49] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=2, y2=0, y3=49] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=2, y2=0, y3=49] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=3, y2=0, y3=48] [L36] EXPR counter++ VAL [\old(counter)=0, counter=4, counter++=3, x1=51, x2=1, y1=3, y2=0, y3=48] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=3, y2=0, y3=48] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=3, y2=0, y3=48] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=4, y2=0, y3=47] [L36] EXPR counter++ VAL [\old(counter)=0, counter=5, counter++=4, x1=51, x2=1, y1=4, y2=0, y3=47] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=4, y2=0, y3=47] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=4, y2=0, y3=47] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=5, y2=0, y3=46] [L36] EXPR counter++ VAL [\old(counter)=0, counter=6, counter++=5, x1=51, x2=1, y1=5, y2=0, y3=46] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=5, y2=0, y3=46] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=5, y2=0, y3=46] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=6, y2=0, y3=45] [L36] EXPR counter++ VAL [\old(counter)=0, counter=7, counter++=6, x1=51, x2=1, y1=6, y2=0, y3=45] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=6, y2=0, y3=45] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=6, y2=0, y3=45] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=7, y2=0, y3=44] [L36] EXPR counter++ VAL [\old(counter)=0, counter=8, counter++=7, x1=51, x2=1, y1=7, y2=0, y3=44] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=7, y2=0, y3=44] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=7, y2=0, y3=44] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=8, y2=0, y3=43] [L36] EXPR counter++ VAL [\old(counter)=0, counter=9, counter++=8, x1=51, x2=1, y1=8, y2=0, y3=43] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=8, y2=0, y3=43] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=8, y2=0, y3=43] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=9, y2=0, y3=42] [L36] EXPR counter++ VAL [\old(counter)=0, counter=10, counter++=9, x1=51, x2=1, y1=9, y2=0, y3=42] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=9, y2=0, y3=42] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=9, y2=0, y3=42] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=10, y2=0, y3=41] [L36] EXPR counter++ VAL [\old(counter)=0, counter=11, counter++=10, x1=51, x2=1, y1=10, y2=0, y3=41] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=10, y2=0, y3=41] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=10, y2=0, y3=41] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=11, y2=0, y3=40] [L36] EXPR counter++ VAL [\old(counter)=0, counter=12, counter++=11, x1=51, x2=1, y1=11, y2=0, y3=40] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=12] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=12] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=11, y2=0, y3=40] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=11, y2=0, y3=40] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=12, y2=0, y3=39] [L36] EXPR counter++ VAL [\old(counter)=0, counter=13, counter++=12, x1=51, x2=1, y1=12, y2=0, y3=39] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=12, y2=0, y3=39] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=12, y2=0, y3=39] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=13, y2=0, y3=38] [L36] EXPR counter++ VAL [\old(counter)=0, counter=14, counter++=13, x1=51, x2=1, y1=13, y2=0, y3=38] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=13, y2=0, y3=38] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=13, y2=0, y3=38] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=14, y2=0, y3=37] [L36] EXPR counter++ VAL [\old(counter)=0, counter=15, counter++=14, x1=51, x2=1, y1=14, y2=0, y3=37] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=15] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=15] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=14, y2=0, y3=37] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=14, y2=0, y3=37] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=15, y2=0, y3=36] [L36] EXPR counter++ VAL [\old(counter)=0, counter=16, counter++=15, x1=51, x2=1, y1=15, y2=0, y3=36] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=15, y2=0, y3=36] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=15, y2=0, y3=36] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=16, y2=0, y3=35] [L36] EXPR counter++ VAL [\old(counter)=0, counter=17, counter++=16, x1=51, x2=1, y1=16, y2=0, y3=35] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=16, y2=0, y3=35] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=16, y2=0, y3=35] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=17, y2=0, y3=34] [L36] EXPR counter++ VAL [\old(counter)=0, counter=18, counter++=17, x1=51, x2=1, y1=17, y2=0, y3=34] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=18] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=18] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=17, y2=0, y3=34] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=17, y2=0, y3=34] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=18, y2=0, y3=33] [L36] EXPR counter++ VAL [\old(counter)=0, counter=19, counter++=18, x1=51, x2=1, y1=18, y2=0, y3=33] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=18, y2=0, y3=33] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=18, y2=0, y3=33] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=19, y2=0, y3=32] [L36] EXPR counter++ VAL [\old(counter)=0, counter=20, counter++=19, x1=51, x2=1, y1=19, y2=0, y3=32] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=19, y2=0, y3=32] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=19, y2=0, y3=32] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=20, y2=0, y3=31] [L36] EXPR counter++ VAL [\old(counter)=0, counter=21, counter++=20, x1=51, x2=1, y1=20, y2=0, y3=31] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=21] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=21] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=20, y2=0, y3=31] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=20, y2=0, y3=31] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=21, y2=0, y3=30] [L36] EXPR counter++ VAL [\old(counter)=0, counter=22, counter++=21, x1=51, x2=1, y1=21, y2=0, y3=30] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=22] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=22] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=21, y2=0, y3=30] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=21, y2=0, y3=30] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=22, y2=0, y3=29] [L36] EXPR counter++ VAL [\old(counter)=0, counter=23, counter++=22, x1=51, x2=1, y1=22, y2=0, y3=29] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=23] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=23] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=22, y2=0, y3=29] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=22, y2=0, y3=29] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=23, y2=0, y3=28] [L36] EXPR counter++ VAL [\old(counter)=0, counter=24, counter++=23, x1=51, x2=1, y1=23, y2=0, y3=28] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=24] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=24] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=23, y2=0, y3=28] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=23, y2=0, y3=28] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=24, y2=0, y3=27] [L36] EXPR counter++ VAL [\old(counter)=0, counter=25, counter++=24, x1=51, x2=1, y1=24, y2=0, y3=27] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=25] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=25] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=24, y2=0, y3=27] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=24, y2=0, y3=27] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=25, y2=0, y3=26] [L36] EXPR counter++ VAL [\old(counter)=0, counter=26, counter++=25, x1=51, x2=1, y1=25, y2=0, y3=26] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=26] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=26] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=25, y2=0, y3=26] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=25, y2=0, y3=26] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=26, y2=0, y3=25] [L36] EXPR counter++ VAL [\old(counter)=0, counter=27, counter++=26, x1=51, x2=1, y1=26, y2=0, y3=25] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=27] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=27] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=26, y2=0, y3=25] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=26, y2=0, y3=25] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=27, y2=0, y3=24] [L36] EXPR counter++ VAL [\old(counter)=0, counter=28, counter++=27, x1=51, x2=1, y1=27, y2=0, y3=24] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=28] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=28] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=27, y2=0, y3=24] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=27, y2=0, y3=24] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=28, y2=0, y3=23] [L36] EXPR counter++ VAL [\old(counter)=0, counter=29, counter++=28, x1=51, x2=1, y1=28, y2=0, y3=23] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=29] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=29] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=28, y2=0, y3=23] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=28, y2=0, y3=23] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=29, y2=0, y3=22] [L36] EXPR counter++ VAL [\old(counter)=0, counter=30, counter++=29, x1=51, x2=1, y1=29, y2=0, y3=22] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=30] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=30] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=29, y2=0, y3=22] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=29, y2=0, y3=22] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=30, y2=0, y3=21] [L36] EXPR counter++ VAL [\old(counter)=0, counter=31, counter++=30, x1=51, x2=1, y1=30, y2=0, y3=21] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=31] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=31] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=30, y2=0, y3=21] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=30, y2=0, y3=21] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=31, y2=0, y3=20] [L36] EXPR counter++ VAL [\old(counter)=0, counter=32, counter++=31, x1=51, x2=1, y1=31, y2=0, y3=20] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=32] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=32] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=31, y2=0, y3=20] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=31, y2=0, y3=20] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=32, y2=0, y3=19] [L36] EXPR counter++ VAL [\old(counter)=0, counter=33, counter++=32, x1=51, x2=1, y1=32, y2=0, y3=19] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=33] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=33] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=32, y2=0, y3=19] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=32, y2=0, y3=19] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=33, y2=0, y3=18] [L36] EXPR counter++ VAL [\old(counter)=0, counter=34, counter++=33, x1=51, x2=1, y1=33, y2=0, y3=18] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=34] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=34] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=33, y2=0, y3=18] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=33, y2=0, y3=18] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=34, y2=0, y3=17] [L36] EXPR counter++ VAL [\old(counter)=0, counter=35, counter++=34, x1=51, x2=1, y1=34, y2=0, y3=17] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=35] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=35] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=34, y2=0, y3=17] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=34, y2=0, y3=17] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=35, y2=0, y3=16] [L36] EXPR counter++ VAL [\old(counter)=0, counter=36, counter++=35, x1=51, x2=1, y1=35, y2=0, y3=16] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=36] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=36] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=35, y2=0, y3=16] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=35, y2=0, y3=16] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=36, y2=0, y3=15] [L36] EXPR counter++ VAL [\old(counter)=0, counter=37, counter++=36, x1=51, x2=1, y1=36, y2=0, y3=15] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=37] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=37] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=36, y2=0, y3=15] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=36, y2=0, y3=15] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=37, y2=0, y3=14] [L36] EXPR counter++ VAL [\old(counter)=0, counter=38, counter++=37, x1=51, x2=1, y1=37, y2=0, y3=14] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=38] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=38] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=37, y2=0, y3=14] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=37, y2=0, y3=14] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=38, y2=0, y3=13] [L36] EXPR counter++ VAL [\old(counter)=0, counter=39, counter++=38, x1=51, x2=1, y1=38, y2=0, y3=13] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=39] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=39] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=38, y2=0, y3=13] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=38, y2=0, y3=13] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=39, y2=0, y3=12] [L36] EXPR counter++ VAL [\old(counter)=0, counter=40, counter++=39, x1=51, x2=1, y1=39, y2=0, y3=12] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=40] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=40] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=39, y2=0, y3=12] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=39, y2=0, y3=12] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=40, y2=0, y3=11] [L36] EXPR counter++ VAL [\old(counter)=0, counter=41, counter++=40, x1=51, x2=1, y1=40, y2=0, y3=11] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=41] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=41] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=40, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=40, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=41, y2=0, y3=10] [L36] EXPR counter++ VAL [\old(counter)=0, counter=42, counter++=41, x1=51, x2=1, y1=41, y2=0, y3=10] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=42] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=42] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=41, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=41, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=42, y2=0, y3=9] [L36] EXPR counter++ VAL [\old(counter)=0, counter=43, counter++=42, x1=51, x2=1, y1=42, y2=0, y3=9] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=43] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=43] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=42, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=42, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=43, y2=0, y3=8] [L36] EXPR counter++ VAL [\old(counter)=0, counter=44, counter++=43, x1=51, x2=1, y1=43, y2=0, y3=8] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=44] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=44] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=43, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=43, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=44, y2=0, y3=7] [L36] EXPR counter++ VAL [\old(counter)=0, counter=45, counter++=44, x1=51, x2=1, y1=44, y2=0, y3=7] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=45] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=45] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=44, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=44, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=45, y2=0, y3=6] [L36] EXPR counter++ VAL [\old(counter)=0, counter=46, counter++=45, x1=51, x2=1, y1=45, y2=0, y3=6] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=46] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=46] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=45, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=45, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=46, y2=0, y3=5] [L36] EXPR counter++ VAL [\old(counter)=0, counter=47, counter++=46, x1=51, x2=1, y1=46, y2=0, y3=5] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=47] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=47] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=46, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=46, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=47, y2=0, y3=4] [L36] EXPR counter++ VAL [\old(counter)=0, counter=48, counter++=47, x1=51, x2=1, y1=47, y2=0, y3=4] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=48] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=48] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=47, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=47, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=48, y2=0, y3=3] [L36] EXPR counter++ VAL [\old(counter)=0, counter=49, counter++=48, x1=51, x2=1, y1=48, y2=0, y3=3] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=49] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=49] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=48, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=48, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=49, y2=0, y3=2] [L36] EXPR counter++ VAL [\old(counter)=0, counter=50, counter++=49, x1=51, x2=1, y1=49, y2=0, y3=2] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=50] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=50] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=49, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=49, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=50, y2=0, y3=1] [L36] EXPR counter++ VAL [\old(counter)=0, counter=51, counter++=50, x1=51, x2=1, y1=50, y2=0, y3=1] [L36] COND FALSE !(counter++<50) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, \old(counter)=0, counter=51] [L16] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] [L18] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 82513.2ms, OverallIterations: 54, TraceHistogramMax: 51, EmptinessCheckTime: 66.1ms, AutomataDifference: 28266.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2592 SDtfs, 4877 SDslu, 11455 SDs, 0 SdLazy, 7639 SolverSat, 1128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5396.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13416 GetRequests, 10843 SyntacticMatches, 0 SemanticMatches, 2573 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20857 ImplicationChecksByTransitivity, 36290.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=53, InterpolantAutomatonStates: 2672, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 451.9ms AutomataMinimizationTime, 53 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 972.4ms SsaConstructionTime, 4687.7ms SatisfiabilityAnalysisTime, 34384.8ms InterpolantComputationTime, 12722 NumberOfCodeBlocks, 12722 NumberOfCodeBlocksAsserted, 687 NumberOfCheckSat, 12196 ConstructedInterpolants, 0 QuantifiedInterpolants, 36097 SizeOfPredicates, 1281 NumberOfNonLiveVariables, 34790 ConjunctsInSsa, 2736 ConjunctsInUnsatCore, 53 InterpolantComputations, 2 PerfectInterpolantSequences, 2657/181514 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...