/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-examples/standard_init7_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 21:34:00,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 21:34:00,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 21:34:00,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-21 21:34:00,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 21:34:00,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 21:34:00,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 21:34:00,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 21:34:00,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 21:34:00,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 21:34:00,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 21:34:00,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 21:34:00,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 21:34:00,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 21:34:00,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 21:34:00,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 21:34:00,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-21 21:34:00,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 21:34:00,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 21:34:00,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 21:34:00,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 21:34:00,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 21:34:00,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 21:34:00,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 21:34:00,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 21:34:00,675 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 21:34:00,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 21:34:00,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 21:34:00,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 21:34:00,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 21:34:00,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 21:34:00,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 21:34:00,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 21:34:00,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 21:34:00,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 21:34:00,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 21:34:00,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 21:34:00,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 21:34:00,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 21:34:00,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 21:34:00,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 21:34:00,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 21:34:00,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 21:34:00,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 21:34:00,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 21:34:00,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 21:34:00,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 21:34:01,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 21:34:01,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 21:34:01,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 21:34:01,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 21:34:01,153 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 21:34:01,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init7_ground-1.i [2020-12-21 21:34:01,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd4f8ccb3/0b57cb65c08b4eb59698439f543baf30/FLAG197411980 [2020-12-21 21:34:01,903 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 21:34:01,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init7_ground-1.i [2020-12-21 21:34:01,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd4f8ccb3/0b57cb65c08b4eb59698439f543baf30/FLAG197411980 [2020-12-21 21:34:02,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd4f8ccb3/0b57cb65c08b4eb59698439f543baf30 [2020-12-21 21:34:02,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 21:34:02,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 21:34:02,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 21:34:02,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 21:34:02,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 21:34:02,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542a2b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02, skipping insertion in model container [2020-12-21 21:34:02,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 21:34:02,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 21:34:02,484 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init7_ground-1.i[816,829] [2020-12-21 21:34:02,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 21:34:02,544 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 21:34:02,562 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init7_ground-1.i[816,829] [2020-12-21 21:34:02,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 21:34:02,619 INFO L208 MainTranslator]: Completed translation [2020-12-21 21:34:02,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02 WrapperNode [2020-12-21 21:34:02,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 21:34:02,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 21:34:02,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 21:34:02,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 21:34:02,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 21:34:02,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 21:34:02,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 21:34:02,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 21:34:02,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (1/1) ... [2020-12-21 21:34:02,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 21:34:02,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 21:34:02,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 21:34:02,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 21:34:02,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (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 [2020-12-21 21:34:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 21:34:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 21:34:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-21 21:34:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 21:34:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 21:34:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-21 21:34:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-21 21:34:03,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 21:34:03,183 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-21 21:34:03,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:34:03 BoogieIcfgContainer [2020-12-21 21:34:03,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 21:34:03,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 21:34:03,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 21:34:03,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 21:34:03,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:34:02" (1/3) ... [2020-12-21 21:34:03,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bd19a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:34:03, skipping insertion in model container [2020-12-21 21:34:03,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:02" (2/3) ... [2020-12-21 21:34:03,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bd19a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:34:03, skipping insertion in model container [2020-12-21 21:34:03,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:34:03" (3/3) ... [2020-12-21 21:34:03,201 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-1.i [2020-12-21 21:34:03,245 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 21:34:03,251 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 21:34:03,273 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 21:34:03,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 21:34:03,305 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 21:34:03,305 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 21:34:03,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 21:34:03,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 21:34:03,306 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 21:34:03,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 21:34:03,306 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 21:34:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-12-21 21:34:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 21:34:03,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:03,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:03,330 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:03,338 INFO L82 PathProgramCache]: Analyzing trace with hash -495328290, now seen corresponding path program 1 times [2020-12-21 21:34:03,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:03,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653065743] [2020-12-21 21:34:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 21:34:03,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653065743] [2020-12-21 21:34:03,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 21:34:03,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 21:34:03,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8874517] [2020-12-21 21:34:03,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 21:34:03,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:03,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 21:34:03,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 21:34:03,586 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-12-21 21:34:03,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:03,784 INFO L93 Difference]: Finished difference Result 56 states and 100 transitions. [2020-12-21 21:34:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 21:34:03,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-21 21:34:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:03,810 INFO L225 Difference]: With dead ends: 56 [2020-12-21 21:34:03,811 INFO L226 Difference]: Without dead ends: 29 [2020-12-21 21:34:03,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 21:34:03,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-21 21:34:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-21 21:34:03,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-21 21:34:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-12-21 21:34:03,857 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 19 [2020-12-21 21:34:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:03,857 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-12-21 21:34:03,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 21:34:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-12-21 21:34:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 21:34:03,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:03,859 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-21 21:34:03,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 21:34:03,859 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:03,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:03,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1838625458, now seen corresponding path program 1 times [2020-12-21 21:34:03,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:03,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155065267] [2020-12-21 21:34:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-21 21:34:03,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155065267] [2020-12-21 21:34:03,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546209979] [2020-12-21 21:34:03,925 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 [2020-12-21 21:34:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:04,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-21 21:34:04,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-21 21:34:04,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:04,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-21 21:34:04,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915014374] [2020-12-21 21:34:04,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-21 21:34:04,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:04,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-21 21:34:04,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-21 21:34:04,117 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 5 states. [2020-12-21 21:34:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:04,275 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2020-12-21 21:34:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 21:34:04,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-21 21:34:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:04,279 INFO L225 Difference]: With dead ends: 61 [2020-12-21 21:34:04,279 INFO L226 Difference]: Without dead ends: 36 [2020-12-21 21:34:04,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-21 21:34:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-21 21:34:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-21 21:34:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-21 21:34:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-12-21 21:34:04,302 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-12-21 21:34:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:04,302 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-12-21 21:34:04,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-21 21:34:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-12-21 21:34:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-21 21:34:04,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:04,304 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-21 21:34:04,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-21 21:34:04,514 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:04,516 INFO L82 PathProgramCache]: Analyzing trace with hash 469832922, now seen corresponding path program 2 times [2020-12-21 21:34:04,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:04,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873763582] [2020-12-21 21:34:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-21 21:34:04,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873763582] [2020-12-21 21:34:04,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124353578] [2020-12-21 21:34:04,650 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 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 [2020-12-21 21:34:04,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-21 21:34:04,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:04,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-21 21:34:04,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-21 21:34:04,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:04,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-21 21:34:04,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558081470] [2020-12-21 21:34:04,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-21 21:34:04,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:04,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-21 21:34:04,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-21 21:34:04,823 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2020-12-21 21:34:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:05,025 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2020-12-21 21:34:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 21:34:05,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-12-21 21:34:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:05,029 INFO L225 Difference]: With dead ends: 74 [2020-12-21 21:34:05,029 INFO L226 Difference]: Without dead ends: 43 [2020-12-21 21:34:05,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-21 21:34:05,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-21 21:34:05,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-21 21:34:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-21 21:34:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-12-21 21:34:05,079 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 33 [2020-12-21 21:34:05,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:05,080 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-12-21 21:34:05,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-21 21:34:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-12-21 21:34:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-21 21:34:05,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:05,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:05,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:05,296 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:05,298 INFO L82 PathProgramCache]: Analyzing trace with hash -467565902, now seen corresponding path program 3 times [2020-12-21 21:34:05,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:05,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546027271] [2020-12-21 21:34:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-21 21:34:05,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546027271] [2020-12-21 21:34:05,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667716414] [2020-12-21 21:34:05,488 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 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 [2020-12-21 21:34:05,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-21 21:34:05,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:05,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-21 21:34:05,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-21 21:34:05,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:05,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-21 21:34:05,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735427724] [2020-12-21 21:34:05,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 21:34:05,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:05,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 21:34:05,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-21 21:34:05,815 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 7 states. [2020-12-21 21:34:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:06,003 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2020-12-21 21:34:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-21 21:34:06,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-12-21 21:34:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:06,005 INFO L225 Difference]: With dead ends: 87 [2020-12-21 21:34:06,005 INFO L226 Difference]: Without dead ends: 50 [2020-12-21 21:34:06,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-21 21:34:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-21 21:34:06,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-21 21:34:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-21 21:34:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-12-21 21:34:06,013 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 40 [2020-12-21 21:34:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:06,014 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-12-21 21:34:06,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 21:34:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-12-21 21:34:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-21 21:34:06,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:06,016 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:06,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:06,230 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:06,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:06,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1915847130, now seen corresponding path program 4 times [2020-12-21 21:34:06,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:06,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780374536] [2020-12-21 21:34:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-21 21:34:06,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780374536] [2020-12-21 21:34:06,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611181782] [2020-12-21 21:34:06,444 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 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 [2020-12-21 21:34:06,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-21 21:34:06,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:06,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-21 21:34:06,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-21 21:34:06,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:06,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-21 21:34:06,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647714442] [2020-12-21 21:34:06,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-21 21:34:06,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:06,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-21 21:34:06,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-21 21:34:06,647 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 8 states. [2020-12-21 21:34:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:06,817 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2020-12-21 21:34:06,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-21 21:34:06,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-12-21 21:34:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:06,818 INFO L225 Difference]: With dead ends: 100 [2020-12-21 21:34:06,818 INFO L226 Difference]: Without dead ends: 57 [2020-12-21 21:34:06,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-21 21:34:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-21 21:34:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-21 21:34:06,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-21 21:34:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-12-21 21:34:06,827 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 47 [2020-12-21 21:34:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:06,828 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-12-21 21:34:06,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-21 21:34:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-12-21 21:34:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-21 21:34:06,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:06,830 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:07,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:07,044 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:07,045 INFO L82 PathProgramCache]: Analyzing trace with hash 2119946930, now seen corresponding path program 5 times [2020-12-21 21:34:07,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:07,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237509820] [2020-12-21 21:34:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-12-21 21:34:07,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237509820] [2020-12-21 21:34:07,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139194036] [2020-12-21 21:34:07,172 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 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 [2020-12-21 21:34:10,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-21 21:34:10,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:10,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-21 21:34:10,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-12-21 21:34:10,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:10,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-21 21:34:10,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496163540] [2020-12-21 21:34:10,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-21 21:34:10,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:10,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-21 21:34:10,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-21 21:34:10,981 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 9 states. [2020-12-21 21:34:11,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:11,157 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2020-12-21 21:34:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-21 21:34:11,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-12-21 21:34:11,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:11,162 INFO L225 Difference]: With dead ends: 113 [2020-12-21 21:34:11,163 INFO L226 Difference]: Without dead ends: 64 [2020-12-21 21:34:11,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-21 21:34:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-21 21:34:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-12-21 21:34:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-21 21:34:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2020-12-21 21:34:11,185 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 54 [2020-12-21 21:34:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:11,185 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2020-12-21 21:34:11,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-21 21:34:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2020-12-21 21:34:11,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-21 21:34:11,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:11,187 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:11,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-21 21:34:11,388 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:11,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:11,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1499557594, now seen corresponding path program 6 times [2020-12-21 21:34:11,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:11,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267178274] [2020-12-21 21:34:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-12-21 21:34:11,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267178274] [2020-12-21 21:34:11,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466690611] [2020-12-21 21:34:11,530 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 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 [2020-12-21 21:34:13,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-21 21:34:13,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:13,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-21 21:34:13,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-12-21 21:34:13,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:13,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-21 21:34:13,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042254539] [2020-12-21 21:34:13,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-21 21:34:13,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:13,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-21 21:34:13,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-21 21:34:13,090 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 10 states. [2020-12-21 21:34:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:13,253 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2020-12-21 21:34:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-21 21:34:13,254 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-12-21 21:34:13,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:13,257 INFO L225 Difference]: With dead ends: 126 [2020-12-21 21:34:13,257 INFO L226 Difference]: Without dead ends: 71 [2020-12-21 21:34:13,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-21 21:34:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-21 21:34:13,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-21 21:34:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-21 21:34:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2020-12-21 21:34:13,268 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 61 [2020-12-21 21:34:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:13,269 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2020-12-21 21:34:13,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-21 21:34:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2020-12-21 21:34:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-21 21:34:13,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:13,270 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:13,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:13,477 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:13,479 INFO L82 PathProgramCache]: Analyzing trace with hash -664919374, now seen corresponding path program 7 times [2020-12-21 21:34:13,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:13,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921393355] [2020-12-21 21:34:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-12-21 21:34:13,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921393355] [2020-12-21 21:34:13,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439880155] [2020-12-21 21:34:13,681 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 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 [2020-12-21 21:34:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:13,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-21 21:34:13,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-12-21 21:34:13,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:13,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-21 21:34:13,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651483349] [2020-12-21 21:34:13,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-21 21:34:13,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:13,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-21 21:34:13,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-21 21:34:13,847 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 11 states. [2020-12-21 21:34:13,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:13,990 INFO L93 Difference]: Finished difference Result 139 states and 159 transitions. [2020-12-21 21:34:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-21 21:34:13,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-12-21 21:34:13,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:13,992 INFO L225 Difference]: With dead ends: 139 [2020-12-21 21:34:13,992 INFO L226 Difference]: Without dead ends: 78 [2020-12-21 21:34:13,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-21 21:34:13,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-21 21:34:14,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-21 21:34:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-21 21:34:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-12-21 21:34:14,001 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 68 [2020-12-21 21:34:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:14,002 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-12-21 21:34:14,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-21 21:34:14,002 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-12-21 21:34:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-21 21:34:14,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:14,003 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:14,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:14,217 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:14,218 INFO L82 PathProgramCache]: Analyzing trace with hash 184081370, now seen corresponding path program 8 times [2020-12-21 21:34:14,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:14,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125796312] [2020-12-21 21:34:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-12-21 21:34:14,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125796312] [2020-12-21 21:34:14,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196591356] [2020-12-21 21:34:14,397 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 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 [2020-12-21 21:34:14,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-21 21:34:14,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:14,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-21 21:34:14,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-12-21 21:34:14,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:14,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-21 21:34:14,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17609220] [2020-12-21 21:34:14,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-21 21:34:14,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:14,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-21 21:34:14,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-21 21:34:14,646 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 12 states. [2020-12-21 21:34:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:14,808 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2020-12-21 21:34:14,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-21 21:34:14,809 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-12-21 21:34:14,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:14,810 INFO L225 Difference]: With dead ends: 152 [2020-12-21 21:34:14,810 INFO L226 Difference]: Without dead ends: 85 [2020-12-21 21:34:14,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-21 21:34:14,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-21 21:34:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-21 21:34:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-21 21:34:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2020-12-21 21:34:14,819 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 75 [2020-12-21 21:34:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:14,820 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2020-12-21 21:34:14,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-21 21:34:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2020-12-21 21:34:14,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-21 21:34:14,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:14,821 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:15,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-21 21:34:15,037 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:15,038 INFO L82 PathProgramCache]: Analyzing trace with hash -96439630, now seen corresponding path program 9 times [2020-12-21 21:34:15,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:15,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103918932] [2020-12-21 21:34:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-12-21 21:34:15,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103918932] [2020-12-21 21:34:15,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509369080] [2020-12-21 21:34:15,189 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 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 [2020-12-21 21:34:26,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-21 21:34:26,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:26,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-21 21:34:26,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-12-21 21:34:26,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:26,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-21 21:34:26,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578395022] [2020-12-21 21:34:26,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-21 21:34:26,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:26,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-21 21:34:26,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-21 21:34:26,962 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 13 states. [2020-12-21 21:34:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:27,158 INFO L93 Difference]: Finished difference Result 165 states and 185 transitions. [2020-12-21 21:34:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-21 21:34:27,159 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-12-21 21:34:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:27,160 INFO L225 Difference]: With dead ends: 165 [2020-12-21 21:34:27,160 INFO L226 Difference]: Without dead ends: 92 [2020-12-21 21:34:27,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-21 21:34:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-21 21:34:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-21 21:34:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-21 21:34:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-12-21 21:34:27,168 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 82 [2020-12-21 21:34:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:27,169 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-12-21 21:34:27,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-21 21:34:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-12-21 21:34:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-21 21:34:27,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:27,170 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:27,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:27,372 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:27,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1268791078, now seen corresponding path program 10 times [2020-12-21 21:34:27,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:27,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019037968] [2020-12-21 21:34:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-12-21 21:34:27,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019037968] [2020-12-21 21:34:27,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629244560] [2020-12-21 21:34:27,536 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 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 [2020-12-21 21:34:27,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-21 21:34:27,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:27,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-21 21:34:27,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-12-21 21:34:27,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:27,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-12-21 21:34:27,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529016059] [2020-12-21 21:34:27,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-21 21:34:27,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:27,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-21 21:34:27,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-12-21 21:34:27,740 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 14 states. [2020-12-21 21:34:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:28,002 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2020-12-21 21:34:28,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-21 21:34:28,002 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-12-21 21:34:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:28,003 INFO L225 Difference]: With dead ends: 178 [2020-12-21 21:34:28,004 INFO L226 Difference]: Without dead ends: 99 [2020-12-21 21:34:28,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-12-21 21:34:28,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-21 21:34:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-12-21 21:34:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-21 21:34:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2020-12-21 21:34:28,030 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 89 [2020-12-21 21:34:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:28,030 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2020-12-21 21:34:28,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-21 21:34:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2020-12-21 21:34:28,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-21 21:34:28,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:28,034 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:28,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:28,236 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:28,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:28,237 INFO L82 PathProgramCache]: Analyzing trace with hash -669334862, now seen corresponding path program 11 times [2020-12-21 21:34:28,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:28,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203971115] [2020-12-21 21:34:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2020-12-21 21:34:28,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203971115] [2020-12-21 21:34:28,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138016471] [2020-12-21 21:34:28,417 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 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