/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/cohendiv-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 14:12:55,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 14:12:55,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 14:12:55,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 14:12:55,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 14:12:55,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 14:12:55,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 14:12:55,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 14:12:55,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 14:12:55,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 14:12:55,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 14:12:55,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 14:12:55,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 14:12:55,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 14:12:55,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 14:12:55,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 14:12:55,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 14:12:55,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 14:12:55,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 14:12:55,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 14:12:55,519 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 14:12:55,555 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 14:12:55,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 14:12:55,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 14:12:55,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 14:12:55,556 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 14:12:55,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 14:12:55,556 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 14:12:55,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 14:12:55,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 14:12:55,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 14:12:55,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 14:12:55,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 14:12:55,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 14:12:55,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 14:12:55,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 14:12:55,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 14:12:55,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 14:12:55,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 14:12:55,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 14:12:55,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 14:12:55,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 14:12:55,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 14:12:55,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 14:12:55,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 14:12:55,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 14:12:55,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 14:12:55,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 14:12:55,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 14:12:55,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 14:12:55,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 14:12:55,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 14:12:55,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 14:12:55,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 14:12:55,804 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 14:12:55,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2021-05-02 14:12:55,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9322ba85/edd4f92ad6b14459b2d5e7c7d4d6712b/FLAG1ac832f40 [2021-05-02 14:12:56,236 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 14:12:56,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2021-05-02 14:12:56,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9322ba85/edd4f92ad6b14459b2d5e7c7d4d6712b/FLAG1ac832f40 [2021-05-02 14:12:56,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9322ba85/edd4f92ad6b14459b2d5e7c7d4d6712b [2021-05-02 14:12:56,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 14:12:56,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 14:12:56,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 14:12:56,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 14:12:56,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 14:12:56,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:12:56" (1/1) ... [2021-05-02 14:12:56,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd0aa46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56, skipping insertion in model container [2021-05-02 14:12:56,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:12:56" (1/1) ... [2021-05-02 14:12:56,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 14:12:56,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 14:12:56,405 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/cohendiv-ll_valuebound50.c[576,589] [2021-05-02 14:12:56,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:12:56,427 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 14:12:56,465 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/cohendiv-ll_valuebound50.c[576,589] [2021-05-02 14:12:56,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:12:56,487 INFO L208 MainTranslator]: Completed translation [2021-05-02 14:12:56,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56 WrapperNode [2021-05-02 14:12:56,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 14:12:56,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 14:12:56,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 14:12:56,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 14:12:56,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56" (1/1) ... [2021-05-02 14:12:56,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56" (1/1) ... [2021-05-02 14:12:56,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56" (1/1) ... [2021-05-02 14:12:56,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56" (1/1) ... [2021-05-02 14:12:56,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56" (1/1) ... [2021-05-02 14:12:56,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56" (1/1) ... [2021-05-02 14:12:56,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56" (1/1) ... [2021-05-02 14:12:56,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 14:12:56,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 14:12:56,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 14:12:56,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 14:12:56,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56" (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 14:12:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 14:12:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 14:12:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 14:12:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 14:12:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 14:12:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 14:12:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 14:12:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 14:12:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 14:12:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 14:12:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 14:12:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 14:12:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 14:12:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 14:12:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 14:12:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 14:12:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 14:12:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 14:12:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 14:12:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 14:12:56,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 14:12:56,803 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 14:12:56,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:12:56 BoogieIcfgContainer [2021-05-02 14:12:56,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 14:12:56,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 14:12:56,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 14:12:56,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 14:12:56,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 02:12:56" (1/3) ... [2021-05-02 14:12:56,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff9c282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:12:56, skipping insertion in model container [2021-05-02 14:12:56,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:12:56" (2/3) ... [2021-05-02 14:12:56,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff9c282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:12:56, skipping insertion in model container [2021-05-02 14:12:56,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:12:56" (3/3) ... [2021-05-02 14:12:56,822 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound50.c [2021-05-02 14:12:56,825 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 14:12:56,828 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 14:12:56,837 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 14:12:56,853 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 14:12:56,853 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 14:12:56,854 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 14:12:56,854 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 14:12:56,854 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 14:12:56,854 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 14:12:56,854 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 14:12:56,854 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 14:12:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 14:12:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 14:12:56,867 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:12:56,867 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:12:56,867 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:12:56,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:12:56,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1768835633, now seen corresponding path program 1 times [2021-05-02 14:12:56,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:12:56,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220110011] [2021-05-02 14:12:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:12:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:57,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 14:12:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 14:12:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:57,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 14:12:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:57,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 14:12:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 14:12:57,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:12:57,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220110011] [2021-05-02 14:12:57,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220110011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:12:57,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:12:57,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 14:12:57,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831768926] [2021-05-02 14:12:57,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 14:12:57,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:12:57,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 14:12:57,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:12:57,093 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 14:12:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:12:57,232 INFO L93 Difference]: Finished difference Result 71 states and 110 transitions. [2021-05-02 14:12:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 14:12:57,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-05-02 14:12:57,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:12:57,238 INFO L225 Difference]: With dead ends: 71 [2021-05-02 14:12:57,238 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 14:12:57,240 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:12:57,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 14:12:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 14:12:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 14:12:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2021-05-02 14:12:57,300 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 28 [2021-05-02 14:12:57,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:12:57,300 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2021-05-02 14:12:57,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 14:12:57,300 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2021-05-02 14:12:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 14:12:57,301 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:12:57,302 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:12:57,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 14:12:57,302 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:12:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:12:57,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1378913883, now seen corresponding path program 1 times [2021-05-02 14:12:57,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:12:57,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209968385] [2021-05-02 14:12:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:12:57,331 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:12:57,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170832130] [2021-05-02 14:12:57,332 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 14:12:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:57,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 14:12:57,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:12:57,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:57,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:57,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:57,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:57,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 14:12:57,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:12:57,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209968385] [2021-05-02 14:12:57,603 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:12:57,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170832130] [2021-05-02 14:12:57,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170832130] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:12:57,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:12:57,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 14:12:57,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231994547] [2021-05-02 14:12:57,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 14:12:57,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:12:57,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 14:12:57,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 14:12:57,606 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 14:12:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:12:57,710 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-05-02 14:12:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 14:12:57,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-05-02 14:12:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:12:57,712 INFO L225 Difference]: With dead ends: 45 [2021-05-02 14:12:57,712 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 14:12:57,712 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 71.0ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 14:12:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 14:12:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-05-02 14:12:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 14:12:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2021-05-02 14:12:57,720 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 28 [2021-05-02 14:12:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:12:57,720 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2021-05-02 14:12:57,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 14:12:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2021-05-02 14:12:57,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 14:12:57,721 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:12:57,721 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 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 14:12:57,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 14:12:57,933 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:12:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:12:57,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1928335320, now seen corresponding path program 1 times [2021-05-02 14:12:57,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:12:57,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734424927] [2021-05-02 14:12:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:12:57,947 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:12:57,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009960922] [2021-05-02 14:12:57,948 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 14:12:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:58,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 14:12:58,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:12:58,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 14:12:58,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:12:58,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734424927] [2021-05-02 14:12:58,210 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:12:58,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009960922] [2021-05-02 14:12:58,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009960922] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:12:58,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:12:58,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 14:12:58,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997270331] [2021-05-02 14:12:58,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 14:12:58,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:12:58,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 14:12:58,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:12:58,213 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 14:12:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:12:58,359 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-05-02 14:12:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 14:12:58,359 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 33 [2021-05-02 14:12:58,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:12:58,360 INFO L225 Difference]: With dead ends: 57 [2021-05-02 14:12:58,361 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 14:12:58,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-05-02 14:12:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 14:12:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-05-02 14:12:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 14:12:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2021-05-02 14:12:58,369 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 33 [2021-05-02 14:12:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:12:58,370 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2021-05-02 14:12:58,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 14:12:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2021-05-02 14:12:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 14:12:58,370 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:12:58,371 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 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 14:12:58,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:12:58,587 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:12:58,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:12:58,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1297647068, now seen corresponding path program 1 times [2021-05-02 14:12:58,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:12:58,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176838206] [2021-05-02 14:12:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:12:58,600 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:12:58,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208527847] [2021-05-02 14:12:58,600 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 14:12:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:58,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 14:12:58,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:12:58,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 14:12:58,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:12:58,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176838206] [2021-05-02 14:12:58,753 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:12:58,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208527847] [2021-05-02 14:12:58,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208527847] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:12:58,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:12:58,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 14:12:58,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102050455] [2021-05-02 14:12:58,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 14:12:58,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:12:58,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 14:12:58,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 14:12:58,755 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-02 14:12:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:12:58,864 INFO L93 Difference]: Finished difference Result 79 states and 105 transitions. [2021-05-02 14:12:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 14:12:58,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2021-05-02 14:12:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:12:58,868 INFO L225 Difference]: With dead ends: 79 [2021-05-02 14:12:58,868 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 14:12:58,870 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-02 14:12:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 14:12:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2021-05-02 14:12:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 14:12:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2021-05-02 14:12:58,888 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 40 [2021-05-02 14:12:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:12:58,888 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2021-05-02 14:12:58,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-02 14:12:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2021-05-02 14:12:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-02 14:12:58,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:12:58,890 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:59,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:12:59,093 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:12:59,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:12:59,093 INFO L82 PathProgramCache]: Analyzing trace with hash 991781023, now seen corresponding path program 1 times [2021-05-02 14:12:59,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:12:59,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694100854] [2021-05-02 14:12:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:12:59,102 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:12:59,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956408869] [2021-05-02 14:12:59,103 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 14:12:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:59,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 14:12:59,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:12:59,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-05-02 14:12:59,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:12:59,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694100854] [2021-05-02 14:12:59,315 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:12:59,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956408869] [2021-05-02 14:12:59,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956408869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:12:59,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:12:59,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 14:12:59,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750529921] [2021-05-02 14:12:59,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 14:12:59,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:12:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 14:12:59,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:12:59,317 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-05-02 14:12:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:12:59,459 INFO L93 Difference]: Finished difference Result 76 states and 97 transitions. [2021-05-02 14:12:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 14:12:59,459 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2021-05-02 14:12:59,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:12:59,462 INFO L225 Difference]: With dead ends: 76 [2021-05-02 14:12:59,462 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 14:12:59,463 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 14:12:59,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 14:12:59,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 14:12:59,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 41 states have (on average 1.146341463414634) internal successors, (47), 43 states have internal predecessors, (47), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 14:12:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2021-05-02 14:12:59,474 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 56 [2021-05-02 14:12:59,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:12:59,474 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-05-02 14:12:59,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-05-02 14:12:59,474 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2021-05-02 14:12:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 14:12:59,475 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:12:59,475 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-05-02 14:12:59,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:12:59,692 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:12:59,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:12:59,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2096667334, now seen corresponding path program 1 times [2021-05-02 14:12:59,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:12:59,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085885539] [2021-05-02 14:12:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:12:59,702 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:12:59,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8022090] [2021-05-02 14:12:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 14:12:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:12:59,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 14:12:59,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:12:59,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:12:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-05-02 14:12:59,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:12:59,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085885539] [2021-05-02 14:12:59,981 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:12:59,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8022090] [2021-05-02 14:12:59,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8022090] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:12:59,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:12:59,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 14:12:59,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129836470] [2021-05-02 14:12:59,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 14:12:59,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:12:59,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 14:12:59,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 14:12:59,982 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-02 14:13:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:13:00,159 INFO L93 Difference]: Finished difference Result 130 states and 163 transitions. [2021-05-02 14:13:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 14:13:00,160 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 63 [2021-05-02 14:13:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:13:00,161 INFO L225 Difference]: With dead ends: 130 [2021-05-02 14:13:00,161 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 14:13:00,162 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-02 14:13:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 14:13:00,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-05-02 14:13:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 49 states have internal predecessors, (52), 25 states have call successors, (25), 10 states have call predecessors, (25), 9 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 14:13:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-05-02 14:13:00,185 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 63 [2021-05-02 14:13:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:13:00,185 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-05-02 14:13:00,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-02 14:13:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-05-02 14:13:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-02 14:13:00,186 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:13:00,186 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:13:00,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 14:13:00,401 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:13:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:13:00,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2105983492, now seen corresponding path program 1 times [2021-05-02 14:13:00,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:13:00,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919044472] [2021-05-02 14:13:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:13:00,415 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:13:00,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008806221] [2021-05-02 14:13:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 14:13:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:00,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 14:13:00,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:13:00,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 72 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-05-02 14:13:00,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:13:00,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919044472] [2021-05-02 14:13:00,934 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:13:00,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008806221] [2021-05-02 14:13:00,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008806221] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:13:00,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:13:00,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-05-02 14:13:00,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315370587] [2021-05-02 14:13:00,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 14:13:00,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:13:00,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 14:13:00,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-05-02 14:13:00,935 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2021-05-02 14:13:01,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:13:01,324 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2021-05-02 14:13:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 14:13:01,324 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 86 [2021-05-02 14:13:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:13:01,325 INFO L225 Difference]: With dead ends: 130 [2021-05-02 14:13:01,325 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 14:13:01,326 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 246.5ms TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-05-02 14:13:01,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 14:13:01,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2021-05-02 14:13:01,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 72 states have internal predecessors, (78), 38 states have call successors, (38), 14 states have call predecessors, (38), 13 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 14:13:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 152 transitions. [2021-05-02 14:13:01,339 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 152 transitions. Word has length 86 [2021-05-02 14:13:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:13:01,339 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 152 transitions. [2021-05-02 14:13:01,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2021-05-02 14:13:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 152 transitions. [2021-05-02 14:13:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 14:13:01,341 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:13:01,341 INFO L523 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-05-02 14:13:01,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:13:01,561 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:13:01,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:13:01,561 INFO L82 PathProgramCache]: Analyzing trace with hash -39671046, now seen corresponding path program 2 times [2021-05-02 14:13:01,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:13:01,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947756098] [2021-05-02 14:13:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:13:01,584 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:13:01,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722124549] [2021-05-02 14:13:01,585 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 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 14:13:01,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 14:13:01,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:13:01,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 14:13:01,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:13:01,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:01,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-05-02 14:13:02,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:13:02,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947756098] [2021-05-02 14:13:02,010 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:13:02,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722124549] [2021-05-02 14:13:02,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722124549] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:13:02,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:13:02,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 14:13:02,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008483498] [2021-05-02 14:13:02,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 14:13:02,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:13:02,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 14:13:02,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-05-02 14:13:02,011 INFO L87 Difference]: Start difference. First operand 122 states and 152 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-02 14:13:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:13:02,276 INFO L93 Difference]: Finished difference Result 162 states and 208 transitions. [2021-05-02 14:13:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 14:13:02,277 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18) Word has length 109 [2021-05-02 14:13:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:13:02,278 INFO L225 Difference]: With dead ends: 162 [2021-05-02 14:13:02,278 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 14:13:02,279 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-05-02 14:13:02,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 14:13:02,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 154. [2021-05-02 14:13:02,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 89 states have internal predecessors, (98), 51 states have call successors, (51), 16 states have call predecessors, (51), 15 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-02 14:13:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 198 transitions. [2021-05-02 14:13:02,293 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 198 transitions. Word has length 109 [2021-05-02 14:13:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:13:02,294 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 198 transitions. [2021-05-02 14:13:02,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-02 14:13:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 198 transitions. [2021-05-02 14:13:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-05-02 14:13:02,295 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:13:02,295 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:13:02,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:13:02,509 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:13:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:13:02,509 INFO L82 PathProgramCache]: Analyzing trace with hash 800180238, now seen corresponding path program 3 times [2021-05-02 14:13:02,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:13:02,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141113789] [2021-05-02 14:13:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:13:02,517 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:13:02,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494299761] [2021-05-02 14:13:02,517 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 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 14:13:02,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 14:13:02,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:13:02,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 14:13:02,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:13:02,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:02,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:02,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:02,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:02,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:02,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 123 proven. 35 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-05-02 14:13:02,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:13:02,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141113789] [2021-05-02 14:13:02,788 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:13:02,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494299761] [2021-05-02 14:13:02,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494299761] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:13:02,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:13:02,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 14:13:02,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036585244] [2021-05-02 14:13:02,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 14:13:02,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:13:02,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 14:13:02,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:13:02,789 INFO L87 Difference]: Start difference. First operand 154 states and 198 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2021-05-02 14:13:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:13:11,093 INFO L93 Difference]: Finished difference Result 174 states and 218 transitions. [2021-05-02 14:13:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 14:13:11,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) Word has length 116 [2021-05-02 14:13:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:13:11,101 INFO L225 Difference]: With dead ends: 174 [2021-05-02 14:13:11,101 INFO L226 Difference]: Without dead ends: 170 [2021-05-02 14:13:11,101 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-05-02 14:13:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-02 14:13:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2021-05-02 14:13:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 84 states have (on average 1.0833333333333333) internal successors, (91), 86 states have internal predecessors, (91), 39 states have call successors, (39), 18 states have call predecessors, (39), 17 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 14:13:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2021-05-02 14:13:11,141 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 116 [2021-05-02 14:13:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:13:11,141 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2021-05-02 14:13:11,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2021-05-02 14:13:11,141 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2021-05-02 14:13:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-05-02 14:13:11,143 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:13:11,143 INFO L523 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1] [2021-05-02 14:13:11,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 14:13:11,343 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:13:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:13:11,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1404635598, now seen corresponding path program 4 times [2021-05-02 14:13:11,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:13:11,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907152077] [2021-05-02 14:13:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:13:11,364 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:13:11,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458153411] [2021-05-02 14:13:11,364 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 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 14:13:11,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 14:13:11,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:13:11,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 14:13:11,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:13:11,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:11,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:12,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:13,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:13,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:13,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:13,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:13,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:13,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:13,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:13,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:13,270 WARN L159 QuantifierPusher]: Ignoring assumption.