/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/fermat1-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:06:26,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:06:26,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:06:26,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 15:06:26,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:06:26,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:06:26,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:06:26,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:06:26,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:06:26,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:06:26,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:06:26,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:06:26,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:06:26,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:06:26,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:06:26,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:06:26,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 15:06:26,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:06:26,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:06:26,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:06:26,483 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 15:06:26,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:06:26,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:06:26,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:06:26,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:06:26,536 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:06:26,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:06:26,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:06:26,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:06:26,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:06:26,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:06:26,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:06:26,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:06:26,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:06:26,538 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:06:26,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:06:26,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:06:26,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:06:26,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:06:26,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:06:26,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:06:26,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:06:26,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:06:26,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:06:26,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:06:26,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:06:26,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:06:26,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:06:26,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:06:26,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:06:26,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:06:26,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:06:26,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:06:26,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:06:26,839 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:06:26,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c [2021-05-02 15:06:26,883 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc935524/0a1eb73eb094465a82b12019ff89ca12/FLAG376d59e19 [2021-05-02 15:06:27,171 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:06:27,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c [2021-05-02 15:06:27,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc935524/0a1eb73eb094465a82b12019ff89ca12/FLAG376d59e19 [2021-05-02 15:06:27,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc935524/0a1eb73eb094465a82b12019ff89ca12 [2021-05-02 15:06:27,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:06:27,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:06:27,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:06:27,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:06:27,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:06:27,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:06:27" (1/1) ... [2021-05-02 15:06:27,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2a05fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27, skipping insertion in model container [2021-05-02 15:06:27,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:06:27" (1/1) ... [2021-05-02 15:06:27,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:06:27,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:06:27,735 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/fermat1-ll_valuebound5.c[535,548] [2021-05-02 15:06:27,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:06:27,756 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:06:27,768 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/fermat1-ll_valuebound5.c[535,548] [2021-05-02 15:06:27,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:06:27,801 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:06:27,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27 WrapperNode [2021-05-02 15:06:27,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:06:27,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:06:27,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:06:27,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:06:27,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27" (1/1) ... [2021-05-02 15:06:27,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27" (1/1) ... [2021-05-02 15:06:27,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27" (1/1) ... [2021-05-02 15:06:27,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27" (1/1) ... [2021-05-02 15:06:27,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27" (1/1) ... [2021-05-02 15:06:27,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27" (1/1) ... [2021-05-02 15:06:27,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27" (1/1) ... [2021-05-02 15:06:27,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:06:27,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:06:27,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:06:27,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:06:27,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27" (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 15:06:27,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:06:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:06:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:06:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:06:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:06:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:06:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:06:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:06:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:06:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:06:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:06:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:06:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:06:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:06:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:06:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:06:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:06:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:06:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:06:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:06:28,127 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:06:28,127 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-02 15:06:28,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:06:28 BoogieIcfgContainer [2021-05-02 15:06:28,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:06:28,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:06:28,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:06:28,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:06:28,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:06:27" (1/3) ... [2021-05-02 15:06:28,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f82e630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:06:28, skipping insertion in model container [2021-05-02 15:06:28,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:06:27" (2/3) ... [2021-05-02 15:06:28,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f82e630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:06:28, skipping insertion in model container [2021-05-02 15:06:28,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:06:28" (3/3) ... [2021-05-02 15:06:28,139 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound5.c [2021-05-02 15:06:28,142 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:06:28,145 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:06:28,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:06:28,167 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:06:28,167 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:06:28,167 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:06:28,167 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:06:28,167 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:06:28,167 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:06:28,167 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:06:28,167 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:06:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 15:06:28,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:06:28,180 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:06:28,180 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:06:28,180 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:06:28,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:06:28,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1718462925, now seen corresponding path program 1 times [2021-05-02 15:06:28,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:06:28,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262871492] [2021-05-02 15:06:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:06:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:28,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 15:06:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:28,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 15:06:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 15:06:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 15:06:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:28,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 15:06:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 15:06:28,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:06:28,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262871492] [2021-05-02 15:06:28,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262871492] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:06:28,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:06:28,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 15:06:28,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043190062] [2021-05-02 15:06:28,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 15:06:28,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:06:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 15:06:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:06:28,389 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:06:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:06:28,509 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-05-02 15:06:28,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 15:06:28,511 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 15:06:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:06:28,515 INFO L225 Difference]: With dead ends: 67 [2021-05-02 15:06:28,516 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 15:06:28,519 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:06:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 15:06:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 15:06:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 15:06:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-05-02 15:06:28,562 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 33 [2021-05-02 15:06:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:06:28,562 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-05-02 15:06:28,562 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:06:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-05-02 15:06:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:06:28,564 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:06:28,564 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:06:28,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 15:06:28,565 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:06:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:06:28,565 INFO L82 PathProgramCache]: Analyzing trace with hash 657160210, now seen corresponding path program 1 times [2021-05-02 15:06:28,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:06:28,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120598731] [2021-05-02 15:06:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:06:28,588 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:06:28,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297213507] [2021-05-02 15:06:28,589 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 15:06:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:28,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 15:06:28,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:06:28,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:28,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:28,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:28,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:28,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:28,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:28,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:28,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 15:06:28,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:06:28,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120598731] [2021-05-02 15:06:28,868 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:06:28,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297213507] [2021-05-02 15:06:28,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297213507] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:06:28,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:06:28,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 15:06:28,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612044934] [2021-05-02 15:06:28,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:06:28,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:06:28,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:06:28,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:06:28,870 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:06:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:06:33,050 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-02 15:06:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:06:33,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 15:06:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:06:33,052 INFO L225 Difference]: With dead ends: 48 [2021-05-02 15:06:33,052 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 15:06:33,053 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:06:33,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 15:06:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-05-02 15:06:33,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 15:06:33,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2021-05-02 15:06:33,063 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 33 [2021-05-02 15:06:33,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:06:33,063 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-05-02 15:06:33,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:06:33,064 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2021-05-02 15:06:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 15:06:33,064 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:06:33,064 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-05-02 15:06:33,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 15:06:33,281 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:06:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:06:33,281 INFO L82 PathProgramCache]: Analyzing trace with hash 936002262, now seen corresponding path program 1 times [2021-05-02 15:06:33,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:06:33,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572418071] [2021-05-02 15:06:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:06:33,290 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:06:33,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955127576] [2021-05-02 15:06:33,291 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 15:06:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:33,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 15:06:33,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:06:33,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 15:06:33,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:06:33,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572418071] [2021-05-02 15:06:33,542 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:06:33,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955127576] [2021-05-02 15:06:33,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955127576] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:06:33,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:06:33,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 15:06:33,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341720579] [2021-05-02 15:06:33,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 15:06:33,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:06:33,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 15:06:33,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 15:06:33,543 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 15:06:45,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:06:45,941 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2021-05-02 15:06:45,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 15:06:45,942 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2021-05-02 15:06:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:06:45,944 INFO L225 Difference]: With dead ends: 67 [2021-05-02 15:06:45,944 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 15:06:45,944 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 90.3ms TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-05-02 15:06:45,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 15:06:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 15:06:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.225) internal successors, (49), 42 states have internal predecessors, (49), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 15:06:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2021-05-02 15:06:45,954 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 39 [2021-05-02 15:06:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:06:45,954 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2021-05-02 15:06:45,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 15:06:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2021-05-02 15:06:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 15:06:45,955 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:06:45,955 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-05-02 15:06:46,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:06:46,164 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:06:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:06:46,164 INFO L82 PathProgramCache]: Analyzing trace with hash 584476005, now seen corresponding path program 1 times [2021-05-02 15:06:46,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:06:46,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174517339] [2021-05-02 15:06:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:06:46,179 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:06:46,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531379754] [2021-05-02 15:06:46,179 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 15:06:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:46,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 15:06:46,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:06:46,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:46,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,694 WARN L205 SmtUtils]: Spent 12.28 s on a formula simplification that was a NOOP. DAG size: 27 [2021-05-02 15:06:58,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 15:06:58,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:06:58,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174517339] [2021-05-02 15:06:58,920 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:06:58,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531379754] [2021-05-02 15:06:58,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531379754] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:06:58,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:06:58,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 15:06:58,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948373395] [2021-05-02 15:06:58,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 15:06:58,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:06:58,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 15:06:58,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 15:06:58,922 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 15:07:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:07:04,580 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2021-05-02 15:07:04,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 15:07:04,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2021-05-02 15:07:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:07:04,584 INFO L225 Difference]: With dead ends: 85 [2021-05-02 15:07:04,584 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 15:07:04,586 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 12434.3ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 15:07:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 15:07:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2021-05-02 15:07:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.25) internal successors, (60), 49 states have internal predecessors, (60), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 15:07:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2021-05-02 15:07:04,610 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 47 [2021-05-02 15:07:04,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:07:04,611 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2021-05-02 15:07:04,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 15:07:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2021-05-02 15:07:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 15:07:04,616 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:07:04,616 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2021-05-02 15:07:04,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:07:04,830 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:07:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:07:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash -629102554, now seen corresponding path program 2 times [2021-05-02 15:07:04,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:07:04,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786013845] [2021-05-02 15:07:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:07:04,843 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:07:04,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287578282] [2021-05-02 15:07:04,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 15:07:04,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:07:04,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:07:04,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 15:07:04,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:07:04,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:04,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:04,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:04,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:04,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:04,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:04,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:04,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:05,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:05,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:05,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:05,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:05,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:05,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-05-02 15:07:05,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:07:05,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786013845] [2021-05-02 15:07:05,154 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:07:05,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287578282] [2021-05-02 15:07:05,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287578282] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:07:05,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:07:05,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 15:07:05,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976461286] [2021-05-02 15:07:05,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 15:07:05,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:07:05,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 15:07:05,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 15:07:05,156 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-05-02 15:07:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:07:09,771 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2021-05-02 15:07:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 15:07:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 54 [2021-05-02 15:07:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:07:09,774 INFO L225 Difference]: With dead ends: 99 [2021-05-02 15:07:09,774 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 15:07:09,775 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-05-02 15:07:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 15:07:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2021-05-02 15:07:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 57 states have (on average 1.263157894736842) internal successors, (72), 58 states have internal predecessors, (72), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 15:07:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2021-05-02 15:07:09,785 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 54 [2021-05-02 15:07:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:07:09,785 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2021-05-02 15:07:09,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-05-02 15:07:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2021-05-02 15:07:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 15:07:09,786 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:07:09,786 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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 15:07:10,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:07:10,006 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:07:10,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:07:10,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1844116037, now seen corresponding path program 3 times [2021-05-02 15:07:10,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:07:10,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627416918] [2021-05-02 15:07:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:07:10,013 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:07:10,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500744954] [2021-05-02 15:07:10,013 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 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 15:07:10,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 15:07:10,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:07:10,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 15:07:10,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:07:10,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-05-02 15:07:10,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:07:10,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627416918] [2021-05-02 15:07:10,434 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:07:10,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500744954] [2021-05-02 15:07:10,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500744954] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:07:10,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:07:10,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 15:07:10,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801246937] [2021-05-02 15:07:10,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 15:07:10,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:07:10,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 15:07:10,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-05-02 15:07:10,436 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 15:07:18,660 WARN L205 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 38 [2021-05-02 15:07:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:07:35,751 INFO L93 Difference]: Finished difference Result 163 states and 206 transitions. [2021-05-02 15:07:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 15:07:35,752 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2021-05-02 15:07:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:07:35,753 INFO L225 Difference]: With dead ends: 163 [2021-05-02 15:07:35,753 INFO L226 Difference]: Without dead ends: 161 [2021-05-02 15:07:35,753 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 6227.1ms TimeCoverageRelationStatistics Valid=93, Invalid=458, Unknown=1, NotChecked=0, Total=552 [2021-05-02 15:07:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-02 15:07:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2021-05-02 15:07:35,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 104 states have (on average 1.2403846153846154) internal successors, (129), 108 states have internal predecessors, (129), 35 states have call successors, (35), 17 states have call predecessors, (35), 16 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 15:07:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 197 transitions. [2021-05-02 15:07:35,808 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 197 transitions. Word has length 61 [2021-05-02 15:07:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:07:35,809 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 197 transitions. [2021-05-02 15:07:35,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 15:07:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 197 transitions. [2021-05-02 15:07:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 15:07:35,813 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:07:35,813 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 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, 1, 1, 1] [2021-05-02 15:07:36,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 15:07:36,029 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:07:36,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:07:36,030 INFO L82 PathProgramCache]: Analyzing trace with hash 936440832, now seen corresponding path program 1 times [2021-05-02 15:07:36,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:07:36,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55846257] [2021-05-02 15:07:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:07:36,036 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:07:36,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696299310] [2021-05-02 15:07:36,036 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 15:07:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:07:36,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 15:07:36,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:07:36,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-05-02 15:07:36,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:07:36,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55846257] [2021-05-02 15:07:36,470 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:07:36,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696299310] [2021-05-02 15:07:36,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696299310] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:07:36,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:07:36,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 15:07:36,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577669848] [2021-05-02 15:07:36,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 15:07:36,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:07:36,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 15:07:36,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 15:07:36,472 INFO L87 Difference]: Start difference. First operand 156 states and 197 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-05-02 15:07:36,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:07:36,743 INFO L93 Difference]: Finished difference Result 281 states and 362 transitions. [2021-05-02 15:07:36,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 15:07:36,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 67 [2021-05-02 15:07:36,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:07:36,747 INFO L225 Difference]: With dead ends: 281 [2021-05-02 15:07:36,747 INFO L226 Difference]: Without dead ends: 170 [2021-05-02 15:07:36,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 181.3ms TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-05-02 15:07:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-02 15:07:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2021-05-02 15:07:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 108 states have (on average 1.1574074074074074) internal successors, (125), 113 states have internal predecessors, (125), 34 states have call successors, (34), 19 states have call predecessors, (34), 18 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 15:07:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 192 transitions. [2021-05-02 15:07:36,789 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 192 transitions. Word has length 67 [2021-05-02 15:07:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:07:36,789 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 192 transitions. [2021-05-02 15:07:36,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-05-02 15:07:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 192 transitions. [2021-05-02 15:07:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 15:07:36,791 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:07:36,791 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 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, 1] [2021-05-02 15:07:36,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:07:36,991 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:07:36,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:07:36,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1853245062, now seen corresponding path program 1 times [2021-05-02 15:07:36,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:07:36,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038269964] [2021-05-02 15:07:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:07:36,999 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:07:36,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628237326] [2021-05-02 15:07:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:07:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:07:37,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 15:07:37,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:07:37,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:37,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-05-02 15:07:37,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:07:37,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038269964] [2021-05-02 15:07:37,157 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:07:37,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628237326] [2021-05-02 15:07:37,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628237326] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:07:37,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:07:37,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 15:07:37,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708282544] [2021-05-02 15:07:37,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 15:07:37,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:07:37,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 15:07:37,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 15:07:37,158 INFO L87 Difference]: Start difference. First operand 161 states and 192 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-05-02 15:07:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:07:43,807 INFO L93 Difference]: Finished difference Result 193 states and 221 transitions. [2021-05-02 15:07:43,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 15:07:43,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2021-05-02 15:07:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:07:43,809 INFO L225 Difference]: With dead ends: 193 [2021-05-02 15:07:43,809 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 15:07:43,809 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 15:07:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 15:07:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2021-05-02 15:07:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 125 states have (on average 1.136) internal successors, (142), 132 states have internal predecessors, (142), 36 states have call successors, (36), 24 states have call predecessors, (36), 23 states have return successors, (35), 28 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 15:07:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 213 transitions. [2021-05-02 15:07:43,824 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 213 transitions. Word has length 75 [2021-05-02 15:07:43,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:07:43,825 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 213 transitions. [2021-05-02 15:07:43,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-05-02 15:07:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 213 transitions. [2021-05-02 15:07:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 15:07:43,826 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:07:43,827 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 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, 1] [2021-05-02 15:07:44,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:07:44,041 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:07:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:07:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1766314924, now seen corresponding path program 1 times [2021-05-02 15:07:44,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:07:44,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700966042] [2021-05-02 15:07:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:07:44,047 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:07:44,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343673217] [2021-05-02 15:07:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:07:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:07:44,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 15:07:44,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:07:44,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,515 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-05-02 15:07:44,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:44,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 52 proven. 15 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 15:07:45,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:07:45,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700966042] [2021-05-02 15:07:45,073 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:07:45,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343673217] [2021-05-02 15:07:45,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343673217] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:07:45,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:07:45,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 15:07:45,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640584666] [2021-05-02 15:07:45,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 15:07:45,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:07:45,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 15:07:45,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:07:45,074 INFO L87 Difference]: Start difference. First operand 185 states and 213 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-05-02 15:08:00,756 WARN L205 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-05-02 15:08:02,782 WARN L205 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2021-05-02 15:08:05,401 WARN L205 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-05-02 15:08:05,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:08:05,462 INFO L93 Difference]: Finished difference Result 320 states and 401 transitions. [2021-05-02 15:08:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 15:08:05,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 75 [2021-05-02 15:08:05,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:08:05,465 INFO L225 Difference]: With dead ends: 320 [2021-05-02 15:08:05,465 INFO L226 Difference]: Without dead ends: 226 [2021-05-02 15:08:05,466 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3424.2ms TimeCoverageRelationStatistics Valid=55, Invalid=184, Unknown=1, NotChecked=0, Total=240 [2021-05-02 15:08:05,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-02 15:08:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2021-05-02 15:08:05,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 128 states have (on average 1.125) internal successors, (144), 129 states have internal predecessors, (144), 39 states have call successors, (39), 21 states have call predecessors, (39), 20 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 15:08:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 221 transitions. [2021-05-02 15:08:05,487 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 221 transitions. Word has length 75 [2021-05-02 15:08:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:08:05,487 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 221 transitions. [2021-05-02 15:08:05,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-05-02 15:08:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 221 transitions. [2021-05-02 15:08:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 15:08:05,488 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:08:05,489 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 4, 4, 4, 4, 3, 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] [2021-05-02 15:08:05,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 15:08:05,704 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:08:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:08:05,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2089422831, now seen corresponding path program 1 times [2021-05-02 15:08:05,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:08:05,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252171342] [2021-05-02 15:08:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:08:05,722 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:08:05,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820747737] [2021-05-02 15:08:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:08:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:08:05,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 15:08:05,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:08:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:05,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-05-02 15:08:06,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:08:06,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252171342] [2021-05-02 15:08:06,164 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:08:06,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820747737] [2021-05-02 15:08:06,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820747737] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:08:06,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:08:06,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 15:08:06,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588165693] [2021-05-02 15:08:06,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 15:08:06,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:08:06,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 15:08:06,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-02 15:08:06,165 INFO L87 Difference]: Start difference. First operand 188 states and 221 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-05-02 15:08:10,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:08:10,764 INFO L93 Difference]: Finished difference Result 284 states and 338 transitions. [2021-05-02 15:08:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 15:08:10,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 89 [2021-05-02 15:08:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:08:10,765 INFO L225 Difference]: With dead ends: 284 [2021-05-02 15:08:10,765 INFO L226 Difference]: Without dead ends: 180 [2021-05-02 15:08:10,766 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-05-02 15:08:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-05-02 15:08:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2021-05-02 15:08:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 118 states have (on average 1.11864406779661) internal successors, (132), 119 states have internal predecessors, (132), 37 states have call successors, (37), 19 states have call predecessors, (37), 18 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 15:08:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2021-05-02 15:08:10,791 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 89 [2021-05-02 15:08:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:08:10,791 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2021-05-02 15:08:10,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-05-02 15:08:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2021-05-02 15:08:10,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 15:08:10,793 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:08:10,793 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 4, 4, 4, 4, 3, 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] [2021-05-02 15:08:11,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:08:11,005 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:08:11,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:08:11,006 INFO L82 PathProgramCache]: Analyzing trace with hash 844643163, now seen corresponding path program 2 times [2021-05-02 15:08:11,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:08:11,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867790847] [2021-05-02 15:08:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:08:11,011 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:08:11,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129591272] [2021-05-02 15:08:11,011 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:08:11,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:08:11,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:08:11,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 15:08:11,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:08:11,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 94 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-05-02 15:08:11,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:08:11,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867790847] [2021-05-02 15:08:11,175 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:08:11,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129591272] [2021-05-02 15:08:11,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129591272] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:08:11,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:08:11,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-05-02 15:08:11,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513368943] [2021-05-02 15:08:11,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 15:08:11,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:08:11,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 15:08:11,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 15:08:11,176 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-02 15:08:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:08:11,207 INFO L93 Difference]: Finished difference Result 238 states and 273 transitions. [2021-05-02 15:08:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 15:08:11,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 89 [2021-05-02 15:08:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:08:11,208 INFO L225 Difference]: With dead ends: 238 [2021-05-02 15:08:11,209 INFO L226 Difference]: Without dead ends: 148 [2021-05-02 15:08:11,209 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 15:08:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-05-02 15:08:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-05-02 15:08:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 100 states have (on average 1.09) internal successors, (109), 101 states have internal predecessors, (109), 31 states have call successors, (31), 17 states have call predecessors, (31), 16 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 15:08:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2021-05-02 15:08:11,223 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 89 [2021-05-02 15:08:11,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:08:11,223 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2021-05-02 15:08:11,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-02 15:08:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2021-05-02 15:08:11,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 15:08:11,224 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:08:11,224 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 4, 4, 4, 4, 3, 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] [2021-05-02 15:08:11,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:08:11,427 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:08:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:08:11,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1542246767, now seen corresponding path program 3 times [2021-05-02 15:08:11,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:08:11,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257595269] [2021-05-02 15:08:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:08:11,444 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:08:11,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501468500] [2021-05-02 15:08:11,445 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:08:11,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 15:08:11,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:08:11,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 15:08:11,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:08:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 49 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-05-02 15:08:11,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:08:11,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257595269] [2021-05-02 15:08:11,618 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:08:11,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501468500] [2021-05-02 15:08:11,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501468500] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:08:11,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:08:11,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 15:08:11,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494813993] [2021-05-02 15:08:11,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 15:08:11,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:08:11,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 15:08:11,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 15:08:11,620 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-05-02 15:08:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:08:17,800 INFO L93 Difference]: Finished difference Result 162 states and 181 transitions. [2021-05-02 15:08:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 15:08:17,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2021-05-02 15:08:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:08:17,801 INFO L225 Difference]: With dead ends: 162 [2021-05-02 15:08:17,801 INFO L226 Difference]: Without dead ends: 160 [2021-05-02 15:08:17,802 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 15:08:17,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-02 15:08:17,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2021-05-02 15:08:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 105 states have internal predecessors, (111), 30 states have call successors, (30), 19 states have call predecessors, (30), 18 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 15:08:17,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 170 transitions. [2021-05-02 15:08:17,814 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 170 transitions. Word has length 89 [2021-05-02 15:08:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:08:17,814 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 170 transitions. [2021-05-02 15:08:17,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-05-02 15:08:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 170 transitions. [2021-05-02 15:08:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 15:08:17,816 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:08:17,816 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2021-05-02 15:08:18,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 15:08:18,033 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:08:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:08:18,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1932866046, now seen corresponding path program 4 times [2021-05-02 15:08:18,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:08:18,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360606368] [2021-05-02 15:08:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:08:18,038 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:08:18,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082436228] [2021-05-02 15:08:18,038 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:08:18,079 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 15:08:18,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:08:18,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 15:08:18,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:08:18,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:18,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:18,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:18,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:18,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:36,865 WARN L205 SmtUtils]: Spent 18.71 s on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2021-05-02 15:08:36,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:36,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:36,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:36,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,843 WARN L205 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 15:08:39,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:39,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:08:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 42 refuted. 3 times theorem prover too weak. 195 trivial. 0 not checked. [2021-05-02 15:08:48,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:08:48,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360606368] [2021-05-02 15:08:48,613 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:08:48,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082436228] [2021-05-02 15:08:48,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082436228] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:08:48,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:08:48,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 15:08:48,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104784211] [2021-05-02 15:08:48,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 15:08:48,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:08:48,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 15:08:48,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2021-05-02 15:08:48,615 INFO L87 Difference]: Start difference. First operand 152 states and 170 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 9 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2021-05-02 15:08:54,235 WARN L205 SmtUtils]: Spent 5.53 s on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 15:08:59,851 WARN L205 SmtUtils]: Spent 5.52 s on a formula simplification that was a NOOP. DAG size: 28 [2021-05-02 15:10:12,570 WARN L205 SmtUtils]: Spent 5.55 s on a formula simplification that was a NOOP. DAG size: 24 [2021-05-02 15:10:12,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:10:12,672 INFO L93 Difference]: Finished difference Result 214 states and 243 transitions. [2021-05-02 15:10:12,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 15:10:12,685 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 9 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) Word has length 103 [2021-05-02 15:10:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:10:12,686 INFO L225 Difference]: With dead ends: 214 [2021-05-02 15:10:12,686 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 15:10:12,687 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 49846.1ms TimeCoverageRelationStatistics Valid=67, Invalid=237, Unknown=2, NotChecked=0, Total=306 [2021-05-02 15:10:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 15:10:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-05-02 15:10:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 111 states have (on average 1.072072072072072) internal successors, (119), 113 states have internal predecessors, (119), 34 states have call successors, (34), 19 states have call predecessors, (34), 18 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 15:10:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 186 transitions. [2021-05-02 15:10:12,704 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 186 transitions. Word has length 103 [2021-05-02 15:10:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:10:12,704 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 186 transitions. [2021-05-02 15:10:12,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 9 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2021-05-02 15:10:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 186 transitions. [2021-05-02 15:10:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-02 15:10:12,705 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:10:12,705 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:10:12,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 15:10:12,924 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:10:12,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:10:12,924 INFO L82 PathProgramCache]: Analyzing trace with hash 520685661, now seen corresponding path program 5 times [2021-05-02 15:10:12,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:10:12,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808328330] [2021-05-02 15:10:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:10:12,939 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:10:12,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504247701] [2021-05-02 15:10:12,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:10:13,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-05-02 15:10:13,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:10:13,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 15:10:13,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:10:13,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 120 proven. 36 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 15:10:13,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:10:13,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808328330] [2021-05-02 15:10:13,908 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:10:13,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504247701] [2021-05-02 15:10:13,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504247701] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:10:13,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:10:13,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 15:10:13,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307099232] [2021-05-02 15:10:13,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 15:10:13,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:10:13,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 15:10:13,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=71, Unknown=1, NotChecked=0, Total=90 [2021-05-02 15:10:13,909 INFO L87 Difference]: Start difference. First operand 164 states and 186 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-05-02 15:10:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:10:20,454 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2021-05-02 15:10:20,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 15:10:20,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 110 [2021-05-02 15:10:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:10:20,457 INFO L225 Difference]: With dead ends: 215 [2021-05-02 15:10:20,457 INFO L226 Difference]: Without dead ends: 182 [2021-05-02 15:10:20,458 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1084.3ms TimeCoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2021-05-02 15:10:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-02 15:10:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 167. [2021-05-02 15:10:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 113 states have (on average 1.079646017699115) internal successors, (122), 115 states have internal predecessors, (122), 35 states have call successors, (35), 19 states have call predecessors, (35), 18 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 15:10:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2021-05-02 15:10:20,499 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 110 [2021-05-02 15:10:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:10:20,500 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2021-05-02 15:10:20,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-05-02 15:10:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2021-05-02 15:10:20,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-02 15:10:20,500 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:10:20,501 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 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] [2021-05-02 15:10:20,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 15:10:20,704 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:10:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:10:20,705 INFO L82 PathProgramCache]: Analyzing trace with hash 936499883, now seen corresponding path program 6 times [2021-05-02 15:10:20,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:10:20,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125177587] [2021-05-02 15:10:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:10:20,710 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:10:20,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771856468] [2021-05-02 15:10:20,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:10:20,822 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-02 15:10:20,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:10:20,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 15:10:20,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:10:20,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:20,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:21,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:21,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:21,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:21,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:21,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:21,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:21,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,078 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~r~0_43 Int) (main_~r~0 Int)) (= (+ (* v_main_~r~0_43 v_main_~r~0_43) (* main_~r~0 main_~r~0) (* 4 c_main_~A~0) (* 2 v_main_~r~0_43) (* 2 main_~r~0) (* 2 c_main_~u~0)) (+ (* c_main_~u~0 c_main_~u~0) (* 2 (* v_main_~r~0_43 main_~r~0))))) is different from true [2021-05-02 15:10:23,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:23,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:30,310 WARN L205 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 28 [2021-05-02 15:10:30,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:30,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:30,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:30,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:30,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,525 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 31 [2021-05-02 15:10:42,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 103 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 8 not checked. [2021-05-02 15:10:42,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:10:42,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125177587] [2021-05-02 15:10:42,687 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:10:42,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771856468] [2021-05-02 15:10:42,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771856468] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:10:42,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:10:42,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 15:10:42,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263000851] [2021-05-02 15:10:42,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 15:10:42,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:10:42,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 15:10:42,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=51, Unknown=5, NotChecked=14, Total=90 [2021-05-02 15:10:42,689 INFO L87 Difference]: Start difference. First operand 167 states and 191 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-05-02 15:12:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:12:09,328 INFO L93 Difference]: Finished difference Result 192 states and 216 transitions. [2021-05-02 15:12:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 15:12:09,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2021-05-02 15:12:09,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:12:09,329 INFO L225 Difference]: With dead ends: 192 [2021-05-02 15:12:09,329 INFO L226 Difference]: Without dead ends: 190 [2021-05-02 15:12:09,330 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 21423.8ms TimeCoverageRelationStatistics Valid=31, Invalid=78, Unknown=5, NotChecked=18, Total=132 [2021-05-02 15:12:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-02 15:12:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2021-05-02 15:12:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 127 states have (on average 1.0708661417322836) internal successors, (136), 131 states have internal predecessors, (136), 37 states have call successors, (37), 23 states have call predecessors, (37), 22 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 15:12:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 209 transitions. [2021-05-02 15:12:09,344 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 209 transitions. Word has length 110 [2021-05-02 15:12:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:12:09,344 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 209 transitions. [2021-05-02 15:12:09,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-05-02 15:12:09,344 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 209 transitions. [2021-05-02 15:12:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 15:12:09,345 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:12:09,345 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:12:09,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:12:09,565 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:12:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:12:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash 502868352, now seen corresponding path program 7 times [2021-05-02 15:12:09,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:12:09,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570000511] [2021-05-02 15:12:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:12:09,570 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:12:09,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523436488] [2021-05-02 15:12:09,570 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:12:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:12:09,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 15:12:09,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:12:09,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 71 proven. 18 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-05-02 15:12:09,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:12:09,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570000511] [2021-05-02 15:12:09,811 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:12:09,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523436488] [2021-05-02 15:12:09,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523436488] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:12:09,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:12:09,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 15:12:09,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461170592] [2021-05-02 15:12:09,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 15:12:09,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:12:09,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 15:12:09,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 15:12:09,812 INFO L87 Difference]: Start difference. First operand 187 states and 209 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-02 15:12:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:12:09,916 INFO L93 Difference]: Finished difference Result 263 states and 297 transitions. [2021-05-02 15:12:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 15:12:09,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 117 [2021-05-02 15:12:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:12:09,918 INFO L225 Difference]: With dead ends: 263 [2021-05-02 15:12:09,918 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 15:12:09,918 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:12:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 15:12:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2021-05-02 15:12:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 135 states have (on average 1.0740740740740742) internal successors, (145), 137 states have internal predecessors, (145), 40 states have call successors, (40), 23 states have call predecessors, (40), 22 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 15:12:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 224 transitions. [2021-05-02 15:12:09,934 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 224 transitions. Word has length 117 [2021-05-02 15:12:09,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:12:09,935 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 224 transitions. [2021-05-02 15:12:09,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-02 15:12:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 224 transitions. [2021-05-02 15:12:09,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-05-02 15:12:09,935 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:12:09,935 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 13, 7, 7, 6, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:12:10,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:12:10,141 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:12:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:12:10,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1203885357, now seen corresponding path program 8 times [2021-05-02 15:12:10,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:12:10,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232813352] [2021-05-02 15:12:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:12:10,146 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:12:10,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31372309] [2021-05-02 15:12:10,146 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:12:10,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:12:10,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:12:10,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 15:12:10,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:12:10,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 53 proven. 54 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-05-02 15:12:10,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:12:10,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232813352] [2021-05-02 15:12:10,447 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:12:10,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31372309] [2021-05-02 15:12:10,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31372309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:12:10,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:12:10,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 15:12:10,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151952184] [2021-05-02 15:12:10,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:12:10,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:12:10,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:12:10,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:12:10,448 INFO L87 Difference]: Start difference. First operand 198 states and 224 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 8 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-05-02 15:12:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:12:10,620 INFO L93 Difference]: Finished difference Result 265 states and 304 transitions. [2021-05-02 15:12:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:12:10,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 8 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 124 [2021-05-02 15:12:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:12:10,621 INFO L225 Difference]: With dead ends: 265 [2021-05-02 15:12:10,621 INFO L226 Difference]: Without dead ends: 210 [2021-05-02 15:12:10,622 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-05-02 15:12:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-02 15:12:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 195. [2021-05-02 15:12:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 133 states have (on average 1.0676691729323309) internal successors, (142), 135 states have internal predecessors, (142), 39 states have call successors, (39), 23 states have call predecessors, (39), 22 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 15:12:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2021-05-02 15:12:10,638 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 124 [2021-05-02 15:12:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:12:10,638 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2021-05-02 15:12:10,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 8 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-05-02 15:12:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2021-05-02 15:12:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-02 15:12:10,639 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:12:10,639 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 15, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:12:10,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:12:10,853 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:12:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:12:10,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1442929251, now seen corresponding path program 9 times [2021-05-02 15:12:10,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:12:10,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507394364] [2021-05-02 15:12:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:12:10,858 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:12:10,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89142823] [2021-05-02 15:12:10,858 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:12:10,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 15:12:10,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:12:10,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 15:12:10,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:12:11,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:11,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:11,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:11,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,062 WARN L860 $PredicateComparison]: unable to prove that (exists ((main_~v~0 Int) (main_~r~0 Int)) (= (+ (* main_~v~0 main_~v~0) (* 4 c_main_~A~0) (* 4 main_~r~0) (* 2 c_main_~u~0)) (+ (* c_main_~u~0 c_main_~u~0) (* 2 main_~v~0)))) is different from true [2021-05-02 15:12:13,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:13,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,168 WARN L860 $PredicateComparison]: unable to prove that (exists ((main_~v~0 Int) (v_main_~r~0_59 Int) (v_main_~r~0_58 Int)) (= (+ (* 2 (* c_main_~r~0 v_main_~r~0_58)) (* 4 v_main_~r~0_59) (* main_~v~0 main_~v~0) (* 4 c_main_~A~0) (* 2 c_main_~r~0)) (+ (* 2 main_~v~0) (* c_main_~r~0 c_main_~r~0) (* 2 v_main_~r~0_58) (* v_main_~r~0_58 v_main_~r~0_58)))) is different from true [2021-05-02 15:12:15,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:15,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:17,230 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 15:12:17,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:17,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:17,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:17,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:19,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:19,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:12:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 412 trivial. 7 not checked. [2021-05-02 15:12:19,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:12:19,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507394364] [2021-05-02 15:12:19,285 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:12:19,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89142823] [2021-05-02 15:12:19,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89142823] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:12:19,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:12:19,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 15:12:19,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770068131] [2021-05-02 15:12:19,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 15:12:19,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:12:19,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 15:12:19,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=42, Unknown=3, NotChecked=26, Total=90 [2021-05-02 15:12:19,286 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-05-02 15:12:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:12:35,269 INFO L93 Difference]: Finished difference Result 199 states and 222 transitions. [2021-05-02 15:12:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 15:12:35,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 138 [2021-05-02 15:12:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:12:35,270 INFO L225 Difference]: With dead ends: 199 [2021-05-02 15:12:35,270 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:12:35,270 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8146.1ms TimeCoverageRelationStatistics Valid=30, Invalid=65, Unknown=3, NotChecked=34, Total=132 [2021-05-02 15:12:35,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:12:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:12:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 15:12:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:12:35,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2021-05-02 15:12:35,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:12:35,271 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:12:35,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-05-02 15:12:35,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:12:35,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:12:35,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 15:12:35,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:13:12,397 WARN L205 SmtUtils]: Spent 36.40 s on a formula simplification. DAG size of input: 168 DAG size of output: 94 [2021-05-02 15:18:13,456 WARN L205 SmtUtils]: Spent 5.02 m on a formula simplification. DAG size of input: 168 DAG size of output: 94