/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:27,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:27,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:27,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:27,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:27,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:27,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:27,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:27,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:27,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:27,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:27,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:27,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:27,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:27,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:27,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:27,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:27,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:27,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:27,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:27,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:27,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:27,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:27,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:27,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:27,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:27,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:27,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:27,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:27,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:27,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:27,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:27,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:27,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:27,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:27,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:27,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:27,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:27,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:27,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:27,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:27,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:00:27,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:27,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:27,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:27,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:27,617 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:27,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:27,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:27,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:27,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:27,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:27,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:27,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:27,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:27,619 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:27,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:27,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:27,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:27,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:27,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:27,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:27,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:27,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:27,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:27,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:27,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:27,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:27,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:27,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:27,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:27,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:00:28,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:28,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:28,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:28,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:28,117 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:28,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-09-24 16:00:28,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc10c23d1/f295b6e9e51941a4bba3a9429295832c/FLAGcc3374e92 [2020-09-24 16:00:28,756 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:28,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-09-24 16:00:28,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc10c23d1/f295b6e9e51941a4bba3a9429295832c/FLAGcc3374e92 [2020-09-24 16:00:29,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc10c23d1/f295b6e9e51941a4bba3a9429295832c [2020-09-24 16:00:29,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:29,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:29,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:29,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:29,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:29,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:29" (1/1) ... [2020-09-24 16:00:29,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29, skipping insertion in model container [2020-09-24 16:00:29,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:29" (1/1) ... [2020-09-24 16:00:29,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:29,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:29,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:29,389 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:29,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:29,426 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:29,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29 WrapperNode [2020-09-24 16:00:29,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:29,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:29,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:29,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:29,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29" (1/1) ... [2020-09-24 16:00:29,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29" (1/1) ... [2020-09-24 16:00:29,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29" (1/1) ... [2020-09-24 16:00:29,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29" (1/1) ... [2020-09-24 16:00:29,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29" (1/1) ... [2020-09-24 16:00:29,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29" (1/1) ... [2020-09-24 16:00:29,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29" (1/1) ... [2020-09-24 16:00:29,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:29,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:29,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:29,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:29,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 16:00:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:29,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:29,983 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:00:29,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:29 BoogieIcfgContainer [2020-09-24 16:00:29,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:29,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:29,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:30,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:30,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:29" (1/3) ... [2020-09-24 16:00:30,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66071d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:30, skipping insertion in model container [2020-09-24 16:00:30,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:29" (2/3) ... [2020-09-24 16:00:30,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66071d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:30, skipping insertion in model container [2020-09-24 16:00:30,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:29" (3/3) ... [2020-09-24 16:00:30,009 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-09-24 16:00:30,018 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:30,028 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:30,051 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:30,084 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:30,084 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:30,085 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:30,085 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:30,085 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:30,085 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:30,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:30,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-09-24 16:00:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 16:00:30,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1222569836, now seen corresponding path program 1 times [2020-09-24 16:00:30,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669859282] [2020-09-24 16:00:30,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,307 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,307 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,307 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,308 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 16:00:30,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 16:00:30,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 16:00:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:00:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,384 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,384 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,384 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,385 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:30,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:30,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:30,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669859282] [2020-09-24 16:00:30,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:30,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:30,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759519147] [2020-09-24 16:00:30,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:30,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:30,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:30,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,444 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-09-24 16:00:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,539 INFO L93 Difference]: Finished difference Result 147 states and 198 transitions. [2020-09-24 16:00:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:30,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-09-24 16:00:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,557 INFO L225 Difference]: With dead ends: 147 [2020-09-24 16:00:30,557 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 16:00:30,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 16:00:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-09-24 16:00:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 16:00:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2020-09-24 16:00:30,619 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 43 [2020-09-24 16:00:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,620 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2020-09-24 16:00:30,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2020-09-24 16:00:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 16:00:30,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:30,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1252462105, now seen corresponding path program 1 times [2020-09-24 16:00:30,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68193706] [2020-09-24 16:00:30,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,653 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,653 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,654 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,654 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 16:00:30,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:30,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 16:00:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:00:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,707 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,707 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:30,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:30,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:30,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:30,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:30,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68193706] [2020-09-24 16:00:30,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:30,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:30,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127144129] [2020-09-24 16:00:30,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:30,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:30,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:30,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,734 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 3 states. [2020-09-24 16:00:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,766 INFO L93 Difference]: Finished difference Result 116 states and 148 transitions. [2020-09-24 16:00:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:30,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-24 16:00:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,769 INFO L225 Difference]: With dead ends: 116 [2020-09-24 16:00:30,770 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 16:00:30,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 16:00:30,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2020-09-24 16:00:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 16:00:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2020-09-24 16:00:30,784 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 44 [2020-09-24 16:00:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,785 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2020-09-24 16:00:30,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2020-09-24 16:00:30,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 16:00:30,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:30,788 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,789 INFO L82 PathProgramCache]: Analyzing trace with hash 755286414, now seen corresponding path program 1 times [2020-09-24 16:00:30,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629420923] [2020-09-24 16:00:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,813 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,814 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,814 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,814 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 16:00:30,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:30,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 16:00:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:00:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,852 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,853 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,853 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,853 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:30,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:30,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:30,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:30,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629420923] [2020-09-24 16:00:30,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:30,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:30,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122634161] [2020-09-24 16:00:30,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:30,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:30,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:30,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,864 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand 3 states. [2020-09-24 16:00:30,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,926 INFO L93 Difference]: Finished difference Result 226 states and 299 transitions. [2020-09-24 16:00:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:30,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-24 16:00:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,930 INFO L225 Difference]: With dead ends: 226 [2020-09-24 16:00:30,930 INFO L226 Difference]: Without dead ends: 157 [2020-09-24 16:00:30,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-24 16:00:30,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-09-24 16:00:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 16:00:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 200 transitions. [2020-09-24 16:00:30,951 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 200 transitions. Word has length 44 [2020-09-24 16:00:30,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,951 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 200 transitions. [2020-09-24 16:00:30,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 200 transitions. [2020-09-24 16:00:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 16:00:30,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:30,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1863120818, now seen corresponding path program 1 times [2020-09-24 16:00:30,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135507178] [2020-09-24 16:00:30,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,977 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,977 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,978 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,978 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 16:00:30,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:30,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 16:00:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:00:30,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,015 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,015 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,016 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,016 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:31,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:31,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135507178] [2020-09-24 16:00:31,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:31,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882225924] [2020-09-24 16:00:31,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:31,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:31,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,027 INFO L87 Difference]: Start difference. First operand 155 states and 200 transitions. Second operand 3 states. [2020-09-24 16:00:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,050 INFO L93 Difference]: Finished difference Result 191 states and 246 transitions. [2020-09-24 16:00:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:31,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-09-24 16:00:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,053 INFO L225 Difference]: With dead ends: 191 [2020-09-24 16:00:31,053 INFO L226 Difference]: Without dead ends: 189 [2020-09-24 16:00:31,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-24 16:00:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 155. [2020-09-24 16:00:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 16:00:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 198 transitions. [2020-09-24 16:00:31,070 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 198 transitions. Word has length 45 [2020-09-24 16:00:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,071 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 198 transitions. [2020-09-24 16:00:31,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 198 transitions. [2020-09-24 16:00:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 16:00:31,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:31,074 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1939288392, now seen corresponding path program 1 times [2020-09-24 16:00:31,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949293026] [2020-09-24 16:00:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,107 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 16:00:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:31,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 16:00:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:00:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,138 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,138 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,139 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,139 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:31,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949293026] [2020-09-24 16:00:31,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:31,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649600308] [2020-09-24 16:00:31,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:31,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:31,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,147 INFO L87 Difference]: Start difference. First operand 155 states and 198 transitions. Second operand 3 states. [2020-09-24 16:00:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,169 INFO L93 Difference]: Finished difference Result 403 states and 528 transitions. [2020-09-24 16:00:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:31,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-09-24 16:00:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,172 INFO L225 Difference]: With dead ends: 403 [2020-09-24 16:00:31,172 INFO L226 Difference]: Without dead ends: 273 [2020-09-24 16:00:31,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-24 16:00:31,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2020-09-24 16:00:31,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-24 16:00:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 346 transitions. [2020-09-24 16:00:31,210 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 346 transitions. Word has length 45 [2020-09-24 16:00:31,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,210 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 346 transitions. [2020-09-24 16:00:31,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:31,211 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 346 transitions. [2020-09-24 16:00:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 16:00:31,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:31,217 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,218 INFO L82 PathProgramCache]: Analyzing trace with hash -11355582, now seen corresponding path program 1 times [2020-09-24 16:00:31,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303117394] [2020-09-24 16:00:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,235 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,236 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,236 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,236 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 16:00:31,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:31,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:31,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 16:00:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:00:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,261 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,262 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,262 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,262 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:31,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303117394] [2020-09-24 16:00:31,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:31,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022435172] [2020-09-24 16:00:31,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:31,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:31,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,270 INFO L87 Difference]: Start difference. First operand 271 states and 346 transitions. Second operand 3 states. [2020-09-24 16:00:31,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,295 INFO L93 Difference]: Finished difference Result 739 states and 956 transitions. [2020-09-24 16:00:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:31,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-24 16:00:31,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,299 INFO L225 Difference]: With dead ends: 739 [2020-09-24 16:00:31,299 INFO L226 Difference]: Without dead ends: 493 [2020-09-24 16:00:31,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-09-24 16:00:31,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-09-24 16:00:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-24 16:00:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 618 transitions. [2020-09-24 16:00:31,324 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 618 transitions. Word has length 46 [2020-09-24 16:00:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,324 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 618 transitions. [2020-09-24 16:00:31,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 618 transitions. [2020-09-24 16:00:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 16:00:31,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:00:31,328 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,328 INFO L82 PathProgramCache]: Analyzing trace with hash 338056749, now seen corresponding path program 1 times [2020-09-24 16:00:31,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963953421] [2020-09-24 16:00:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,361 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,362 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,362 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 16:00:31,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:31,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 16:00:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:00:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,407 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,407 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,407 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,407 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:31,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963953421] [2020-09-24 16:00:31,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:31,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938043072] [2020-09-24 16:00:31,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:31,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:31,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,418 INFO L87 Difference]: Start difference. First operand 491 states and 618 transitions. Second operand 3 states. [2020-09-24 16:00:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,461 INFO L93 Difference]: Finished difference Result 599 states and 748 transitions. [2020-09-24 16:00:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:31,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-24 16:00:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,467 INFO L225 Difference]: With dead ends: 599 [2020-09-24 16:00:31,467 INFO L226 Difference]: Without dead ends: 597 [2020-09-24 16:00:31,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-09-24 16:00:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 491. [2020-09-24 16:00:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-24 16:00:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 610 transitions. [2020-09-24 16:00:31,488 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 610 transitions. Word has length 46 [2020-09-24 16:00:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,488 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 610 transitions. [2020-09-24 16:00:31,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:31,489 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 610 transitions. [2020-09-24 16:00:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 16:00:31,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:00:31,491 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,491 INFO L82 PathProgramCache]: Analyzing trace with hash -144915038, now seen corresponding path program 1 times [2020-09-24 16:00:31,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717690524] [2020-09-24 16:00:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,504 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,505 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,505 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 16:00:31,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:31,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 16:00:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:00:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,531 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,531 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,532 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,532 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:31,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717690524] [2020-09-24 16:00:31,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:31,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049047807] [2020-09-24 16:00:31,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:31,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:31,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,539 INFO L87 Difference]: Start difference. First operand 491 states and 610 transitions. Second operand 3 states. [2020-09-24 16:00:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,559 INFO L93 Difference]: Finished difference Result 591 states and 724 transitions. [2020-09-24 16:00:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:31,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-09-24 16:00:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,563 INFO L225 Difference]: With dead ends: 591 [2020-09-24 16:00:31,564 INFO L226 Difference]: Without dead ends: 589 [2020-09-24 16:00:31,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-09-24 16:00:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 491. [2020-09-24 16:00:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-24 16:00:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 602 transitions. [2020-09-24 16:00:31,581 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 602 transitions. Word has length 47 [2020-09-24 16:00:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,581 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 602 transitions. [2020-09-24 16:00:31,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 602 transitions. [2020-09-24 16:00:31,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 16:00:31,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:00:31,583 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,583 INFO L82 PathProgramCache]: Analyzing trace with hash -351776260, now seen corresponding path program 1 times [2020-09-24 16:00:31,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204816095] [2020-09-24 16:00:31,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,596 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,596 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,596 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,597 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 16:00:31,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:31,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 16:00:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:00:31,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,622 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,622 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,622 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,623 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:31,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204816095] [2020-09-24 16:00:31,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:31,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63757497] [2020-09-24 16:00:31,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:31,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:31,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,629 INFO L87 Difference]: Start difference. First operand 491 states and 602 transitions. Second operand 3 states. [2020-09-24 16:00:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,661 INFO L93 Difference]: Finished difference Result 1373 states and 1691 transitions. [2020-09-24 16:00:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:31,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-09-24 16:00:31,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,665 INFO L225 Difference]: With dead ends: 1373 [2020-09-24 16:00:31,665 INFO L226 Difference]: Without dead ends: 491 [2020-09-24 16:00:31,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-09-24 16:00:31,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2020-09-24 16:00:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-24 16:00:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 570 transitions. [2020-09-24 16:00:31,681 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 570 transitions. Word has length 47 [2020-09-24 16:00:31,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,681 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 570 transitions. [2020-09-24 16:00:31,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 570 transitions. [2020-09-24 16:00:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 16:00:31,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:00:31,683 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2062829121, now seen corresponding path program 1 times [2020-09-24 16:00:31,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219264498] [2020-09-24 16:00:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,695 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,696 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,696 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 16:00:31,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:31,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 16:00:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:00:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,718 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,718 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,718 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:31,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219264498] [2020-09-24 16:00:31,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:31,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426526008] [2020-09-24 16:00:31,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:31,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:31,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,728 INFO L87 Difference]: Start difference. First operand 491 states and 570 transitions. Second operand 3 states. [2020-09-24 16:00:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,741 INFO L93 Difference]: Finished difference Result 491 states and 570 transitions. [2020-09-24 16:00:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:31,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-24 16:00:31,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,742 INFO L225 Difference]: With dead ends: 491 [2020-09-24 16:00:31,742 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:00:31,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:00:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:00:31,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:00:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:00:31,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-09-24 16:00:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,745 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:00:31,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:00:31,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:00:31,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:00:31,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:00:31,776 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:00:31,776 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:00:31,777 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:00:31,777 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:00:31,777 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:00:31,777 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:00:31,777 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-09-24 16:00:31,777 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-09-24 16:00:31,778 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 16:00:31,778 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-09-24 16:00:31,778 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 16:00:31,778 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 16:00:31,778 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 16:00:31,778 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 16:00:31,778 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 16:00:31,779 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 16:00:31,779 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-09-24 16:00:31,779 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 16:00:31,779 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 16:00:31,779 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-24 16:00:31,779 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-24 16:00:31,780 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 16:00:31,780 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 16:00:31,780 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-09-24 16:00:31,780 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-09-24 16:00:31,780 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 16:00:31,781 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-09-24 16:00:31,781 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 16:00:31,781 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-24 16:00:31,781 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 16:00:31,781 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 16:00:31,781 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-24 16:00:31,782 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 16:00:31,782 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-09-24 16:00:31,782 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 16:00:31,782 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 16:00:31,782 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 16:00:31,782 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 16:00:31,782 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 16:00:31,783 INFO L268 CegarLoopResult]: For program point L65(line 65) no Hoare annotation was computed. [2020-09-24 16:00:31,783 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 16:00:31,783 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:00:31,783 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 16:00:31,783 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-24 16:00:31,784 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-24 16:00:31,784 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-09-24 16:00:31,784 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 16:00:31,784 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-24 16:00:31,784 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 16:00:31,784 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 16:00:31,784 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 16:00:31,785 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-24 16:00:31,785 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-09-24 16:00:31,785 INFO L268 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-09-24 16:00:31,785 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 16:00:31,785 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 16:00:31,785 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 16:00:31,785 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 16:00:31,786 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-24 16:00:31,786 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-09-24 16:00:31,786 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-24 16:00:31,786 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-09-24 16:00:31,786 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 16:00:31,786 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 16:00:31,787 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 16:00:31,787 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 16:00:31,787 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 16:00:31,787 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 16:00:31,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:00:31 BoogieIcfgContainer [2020-09-24 16:00:31,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:00:31,813 INFO L168 Benchmark]: Toolchain (without parser) took 2710.50 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 101.3 MB in the beginning and 100.5 MB in the end (delta: 765.9 kB). Peak memory consumption was 97.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:31,814 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-24 16:00:31,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.62 ms. Allocated memory is still 140.0 MB. Free memory was 100.9 MB in the beginning and 91.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:31,817 INFO L168 Benchmark]: Boogie Preprocessor took 120.39 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 181.3 MB in the end (delta: -90.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:31,818 INFO L168 Benchmark]: RCFGBuilder took 440.74 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 163.7 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:31,821 INFO L168 Benchmark]: TraceAbstraction took 1807.85 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 162.8 MB in the beginning and 100.5 MB in the end (delta: 62.3 MB). Peak memory consumption was 95.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:31,831 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.62 ms. Allocated memory is still 140.0 MB. Free memory was 100.9 MB in the beginning and 91.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.39 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 181.3 MB in the end (delta: -90.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.74 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 163.7 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1807.85 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 162.8 MB in the beginning and 100.5 MB in the end (delta: 62.3 MB). Peak memory consumption was 95.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 956 SDtfs, 332 SDslu, 668 SDs, 0 SdLazy, 49 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=491occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 266 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 41 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 445 ConstructedInterpolants, 0 QuantifiedInterpolants, 24725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...