/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:01:55,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:01:55,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:01:55,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:01:55,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:01:55,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:01:55,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:01:55,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:01:55,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:01:55,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:01:55,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:01:55,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:01:55,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:01:55,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:01:55,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:01:55,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:01:55,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:01:55,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:01:55,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:01:55,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:01:55,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:01:55,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:01:55,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:01:55,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:01:55,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:01:55,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:01:55,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:01:55,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:01:55,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:01:55,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:01:55,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:01:55,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:01:55,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:01:55,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:01:55,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:01:55,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:01:55,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:01:55,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:01:55,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:01:55,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:01:55,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:01:55,080 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 17:01:55,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:01:55,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:01:55,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:01:55,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:01:55,113 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:01:55,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:01:55,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:01:55,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:01:55,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:01:55,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:01:55,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:01:55,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:01:55,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:01:55,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:01:55,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:01:55,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:01:55,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:01:55,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:01:55,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:01:55,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:01:55,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:01:55,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:01:55,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:01:55,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:01:55,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:01:55,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:01:55,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:01:55,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:01:55,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:01:55,124 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;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;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;log-additional-information=true; [2020-09-24 17:01:55,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:01:55,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:01:55,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:01:55,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:01:55,608 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:01:55,609 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-24 17:01:55,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2463ecbf2/3a834d7938cd472294065306e67a8389/FLAG9a66d67b6 [2020-09-24 17:01:56,242 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:01:56,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-24 17:01:56,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2463ecbf2/3a834d7938cd472294065306e67a8389/FLAG9a66d67b6 [2020-09-24 17:01:56,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2463ecbf2/3a834d7938cd472294065306e67a8389 [2020-09-24 17:01:56,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:01:56,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:01:56,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:01:56,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:01:56,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:01:56,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:56" (1/1) ... [2020-09-24 17:01:56,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e5ec8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56, skipping insertion in model container [2020-09-24 17:01:56,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:56" (1/1) ... [2020-09-24 17:01:56,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:01:56,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:01:56,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:01:56,877 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:01:56,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:01:56,915 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:01:56,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56 WrapperNode [2020-09-24 17:01:56,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:01:56,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:01:56,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:01:56,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:01:56,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56" (1/1) ... [2020-09-24 17:01:56,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56" (1/1) ... [2020-09-24 17:01:56,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56" (1/1) ... [2020-09-24 17:01:56,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56" (1/1) ... [2020-09-24 17:01:56,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56" (1/1) ... [2020-09-24 17:01:56,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56" (1/1) ... [2020-09-24 17:01:56,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56" (1/1) ... [2020-09-24 17:01:56,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:01:56,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:01:56,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:01:56,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:01:56,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56" (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 17:01:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:01:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:01:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-09-24 17:01:57,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:01:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:01:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:01:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-09-24 17:01:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:01:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:01:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:01:57,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:01:57,358 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:01:57,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:57 BoogieIcfgContainer [2020-09-24 17:01:57,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:01:57,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:01:57,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:01:57,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:01:57,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:01:56" (1/3) ... [2020-09-24 17:01:57,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8d03f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:57, skipping insertion in model container [2020-09-24 17:01:57,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:56" (2/3) ... [2020-09-24 17:01:57,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8d03f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:57, skipping insertion in model container [2020-09-24 17:01:57,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:57" (3/3) ... [2020-09-24 17:01:57,377 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-09-24 17:01:57,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:01:57,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:01:57,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:01:57,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:01:57,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:01:57,486 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:01:57,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:01:57,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:01:57,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:01:57,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:01:57,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:01:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 17:01:57,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 17:01:57,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:57,522 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] [2020-09-24 17:01:57,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:57,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:57,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1470222128, now seen corresponding path program 1 times [2020-09-24 17:01:57,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:57,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897689026] [2020-09-24 17:01:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:58,139 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:58,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 17:01:58,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:01:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-24 17:01:58,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:01:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:01:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:01:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:01:58,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:58,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:58,236 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:58,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:58,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:58,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:58,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:01:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:58,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:58,268 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:58,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:58,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:58,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 17:01:58,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:01:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:01:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:01:58,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:58,350 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 17:01:58,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897689026] [2020-09-24 17:01:58,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:58,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:01:58,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244923297] [2020-09-24 17:01:58,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:01:58,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:58,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:01:58,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:01:58,386 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 7 states. [2020-09-24 17:01:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:58,577 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-09-24 17:01:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:01:58,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 17:01:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:58,593 INFO L225 Difference]: With dead ends: 60 [2020-09-24 17:01:58,594 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 17:01:58,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:01:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 17:01:58,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 17:01:58,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 17:01:58,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-24 17:01:58,656 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2020-09-24 17:01:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:58,657 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-24 17:01:58,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:01:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-24 17:01:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 17:01:58,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:58,660 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] [2020-09-24 17:01:58,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:01:58,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:58,661 INFO L82 PathProgramCache]: Analyzing trace with hash 831268307, now seen corresponding path program 1 times [2020-09-24 17:01:58,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:58,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255857305] [2020-09-24 17:01:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:58,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:59,078 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:59,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:01:59,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:01:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-09-24 17:01:59,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:01:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 17:01:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:59,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:59,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:01:59,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:59,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:59,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:01:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:59,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:59,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:01:59,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 17:01:59,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:01:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:59,192 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 17:01:59,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255857305] [2020-09-24 17:01:59,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:59,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:01:59,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945747996] [2020-09-24 17:01:59,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:01:59,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:59,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:01:59,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:01:59,197 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-09-24 17:01:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:59,323 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-09-24 17:01:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:01:59,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-24 17:01:59,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:59,327 INFO L225 Difference]: With dead ends: 46 [2020-09-24 17:01:59,327 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 17:01:59,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:01:59,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 17:01:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-24 17:01:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 17:01:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-24 17:01:59,354 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2020-09-24 17:01:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:59,355 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-24 17:01:59,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:01:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-24 17:01:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 17:01:59,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:59,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:59,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:01:59,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:59,365 INFO L82 PathProgramCache]: Analyzing trace with hash -852904039, now seen corresponding path program 1 times [2020-09-24 17:01:59,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:59,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766382154] [2020-09-24 17:01:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:59,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:59,994 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:59,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 17:01:59,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:01:59,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-24 17:01:59,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:01:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:01:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 17:01:59,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:00,027 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:00,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:00,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:02:00,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:00,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:02:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:00,307 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:00,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:02:00,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:00,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-24 17:02:00,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:02:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:02:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:02:00,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:00,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:02:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:00,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:00,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:02:00,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:00,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:02:00,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:00,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 17:02:00,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766382154] [2020-09-24 17:02:00,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:02:00,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 17:02:00,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928968755] [2020-09-24 17:02:00,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:02:00,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:00,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:02:00,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:02:00,480 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2020-09-24 17:02:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:00,710 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-09-24 17:02:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:02:00,711 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 17:02:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:00,713 INFO L225 Difference]: With dead ends: 56 [2020-09-24 17:02:00,713 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 17:02:00,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:02:00,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 17:02:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-09-24 17:02:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 17:02:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-24 17:02:00,725 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 35 [2020-09-24 17:02:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:00,725 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-24 17:02:00,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:02:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-24 17:02:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 17:02:00,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:00,728 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:00,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:02:00,728 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:00,729 INFO L82 PathProgramCache]: Analyzing trace with hash 2030561919, now seen corresponding path program 1 times [2020-09-24 17:02:00,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:00,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132333956] [2020-09-24 17:02:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:00,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,050 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:01,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 17:02:01,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:02:01,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-24 17:02:01,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:01,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 17:02:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:01,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:02:01,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:02:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,137 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:01,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:02:01,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 17:02:01,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 17:02:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:01,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:02:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:01,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:02:01,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:01,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:02:01,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:02:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:02:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:02:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:02:01,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132333956] [2020-09-24 17:02:01,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:02:01,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:02:01,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974817167] [2020-09-24 17:02:01,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:02:01,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:02:01,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:02:01,217 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 7 states. [2020-09-24 17:02:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:01,327 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-09-24 17:02:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:02:01,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 17:02:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:01,329 INFO L225 Difference]: With dead ends: 61 [2020-09-24 17:02:01,330 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 17:02:01,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:02:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 17:02:01,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-24 17:02:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 17:02:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-09-24 17:02:01,340 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 35 [2020-09-24 17:02:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:01,341 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-09-24 17:02:01,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:02:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-09-24 17:02:01,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 17:02:01,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:01,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:01,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:02:01,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:01,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:01,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2122258312, now seen corresponding path program 1 times [2020-09-24 17:02:01,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:01,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335524063] [2020-09-24 17:02:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,060 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:02,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:02:02,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:02:02,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-09-24 17:02:02,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:02,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:02:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 17:02:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:02:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:02,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:02,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:02,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:02:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:02,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:02:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,327 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:02,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 17:02:02,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:02:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 17:02:02,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:02:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:02:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:02:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:02,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:02,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 17:02:02,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:02:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:02:02,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335524063] [2020-09-24 17:02:02,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:02,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:02:02,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491571175] [2020-09-24 17:02:02,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:02:02,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:02,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:02:02,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:02:02,425 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 9 states. [2020-09-24 17:02:02,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:02,649 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-09-24 17:02:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:02:02,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-09-24 17:02:02,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:02,651 INFO L225 Difference]: With dead ends: 56 [2020-09-24 17:02:02,652 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 17:02:02,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:02:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 17:02:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-09-24 17:02:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 17:02:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-09-24 17:02:02,660 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 36 [2020-09-24 17:02:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:02,660 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-09-24 17:02:02,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:02:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-09-24 17:02:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 17:02:02,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:02,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:02,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:02:02,663 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:02,663 INFO L82 PathProgramCache]: Analyzing trace with hash 404002040, now seen corresponding path program 1 times [2020-09-24 17:02:02,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:02,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971873994] [2020-09-24 17:02:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:04,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:04,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:02:04,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:02:04,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1520 [2020-09-24 17:02:04,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:02:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:02:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:02:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:04,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:04,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:02:04,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:04,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:02:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:04,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:04,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:04,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 17:02:04,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:02:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-24 17:02:04,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:02:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 17:02:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:02:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:04,553 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:04,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:04,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 17:02:04,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:02:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:02:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 17:02:04,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971873994] [2020-09-24 17:02:04,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:04,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:02:04,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224792815] [2020-09-24 17:02:04,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:02:04,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:04,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:02:04,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:02:04,615 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 10 states. [2020-09-24 17:02:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:04,905 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-09-24 17:02:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:02:04,905 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-24 17:02:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:04,907 INFO L225 Difference]: With dead ends: 56 [2020-09-24 17:02:04,907 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 17:02:04,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:02:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 17:02:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 17:02:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 17:02:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-09-24 17:02:04,915 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 36 [2020-09-24 17:02:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:04,916 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-09-24 17:02:04,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:02:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-09-24 17:02:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 17:02:04,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:04,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:04,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:02:04,919 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:04,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:04,919 INFO L82 PathProgramCache]: Analyzing trace with hash 594320754, now seen corresponding path program 1 times [2020-09-24 17:02:04,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:04,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574639720] [2020-09-24 17:02:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:04,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:05,235 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:05,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 17:02:05,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:05,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-24 17:02:05,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:02:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 17:02:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:05,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:05,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:05,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:05,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:05,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:02:05,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:05,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:02:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:05,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:05,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:02:05,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-24 17:02:05,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:02:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:02:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:02:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:02:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:05,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:05,683 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:05,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:02:05,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:05,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 17:02:05,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:02:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:02:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:02:05,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:02:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:05,758 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:02:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:02:05,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 17:02:05,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574639720] [2020-09-24 17:02:05,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:02:05,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 17:02:05,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371520004] [2020-09-24 17:02:05,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:02:05,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:05,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:02:05,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:02:05,814 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 10 states. [2020-09-24 17:02:06,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:06,026 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-09-24 17:02:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:02:06,027 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-24 17:02:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:06,029 INFO L225 Difference]: With dead ends: 71 [2020-09-24 17:02:06,029 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 17:02:06,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:02:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 17:02:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-24 17:02:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 17:02:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-24 17:02:06,037 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 46 [2020-09-24 17:02:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:06,038 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-24 17:02:06,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:02:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-24 17:02:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 17:02:06,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:06,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:06,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:02:06,040 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:06,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1010225367, now seen corresponding path program 1 times [2020-09-24 17:02:06,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:06,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863592974] [2020-09-24 17:02:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:06,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:06,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:06,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:06,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:10,622 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:10,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:02:10,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 17:02:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4566 [2020-09-24 17:02:10,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:02:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 17:02:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:02:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:10,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:10,647 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:10,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:10,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:10,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:02:10,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:10,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:10,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:10,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:02:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:10,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:11,533 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:11,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 17:02:11,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 17:02:11,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-09-24 17:02:11,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:02:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:02:11,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:02:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:11,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:11,744 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:11,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 17:02:11,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:02:11,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 17:02:11,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:02:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:02:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:11,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:02:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:11,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:02:11,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:02:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 17:02:11,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:02:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:02:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 17:02:11,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863592974] [2020-09-24 17:02:11,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:11,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:02:11,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550253294] [2020-09-24 17:02:11,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:02:11,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:11,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:02:11,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:02:11,832 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 10 states. [2020-09-24 17:02:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:12,044 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-09-24 17:02:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:02:12,045 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-24 17:02:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:12,046 INFO L225 Difference]: With dead ends: 47 [2020-09-24 17:02:12,046 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:02:12,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:02:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:02:12,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:02:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:02:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:02:12,048 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-24 17:02:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:12,048 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:02:12,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:02:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:02:12,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:02:12,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:02:12,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:02:12,155 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 17:02:12,155 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:02:12,156 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-09-24 17:02:12,156 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-09-24 17:02:12,156 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y1 1) gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1)) [2020-09-24 17:02:12,156 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 17:02:12,156 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-09-24 17:02:12,157 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (<= (+ gcd_~y2 1) gcd_~y1) (= gcd_~y2 |gcd_#in~y2|) (= gcd_~y1 |gcd_#in~y1|)) [2020-09-24 17:02:12,157 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 17:02:12,157 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-09-24 17:02:12,157 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 17:02:12,157 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 17:02:12,157 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 17:02:12,157 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 17:02:12,158 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 17:02:12,158 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-24 17:02:12,158 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 17:02:12,158 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-24 17:02:12,158 INFO L268 CegarLoopResult]: For program point L15(lines 15 26) no Hoare annotation was computed. [2020-09-24 17:02:12,158 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:02:12,159 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 17:02:12,159 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 17:02:12,159 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:02:12,159 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 17:02:12,159 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 17:02:12,159 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 17:02:12,159 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 17:02:12,159 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 17:02:12,160 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 17:02:12,160 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-09-24 17:02:12,160 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-09-24 17:02:12,160 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-09-24 17:02:12,160 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-24 17:02:12,160 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-24 17:02:12,161 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-09-24 17:02:12,161 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-09-24 17:02:12,161 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 17:02:12,161 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 17:02:12,161 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= 1 main_~m~0)) [2020-09-24 17:02:12,161 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-24 17:02:12,162 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 17:02:12,162 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-24 17:02:12,162 INFO L268 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed. [2020-09-24 17:02:12,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:02:12 BoogieIcfgContainer [2020-09-24 17:02:12,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:02:12,173 INFO L168 Benchmark]: Toolchain (without parser) took 15570.74 ms. Allocated memory was 140.0 MB in the beginning and 322.4 MB in the end (delta: 182.5 MB). Free memory was 103.7 MB in the beginning and 208.9 MB in the end (delta: -105.2 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:02:12,174 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-24 17:02:12,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.09 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:02:12,176 INFO L168 Benchmark]: Boogie Preprocessor took 31.28 ms. Allocated memory is still 140.0 MB. Free memory was 93.1 MB in the beginning and 91.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:02:12,176 INFO L168 Benchmark]: RCFGBuilder took 418.02 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 167.1 MB in the end (delta: -75.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:02:12,177 INFO L168 Benchmark]: TraceAbstraction took 14802.26 ms. Allocated memory was 202.4 MB in the beginning and 322.4 MB in the end (delta: 120.1 MB). Free memory was 166.2 MB in the beginning and 208.9 MB in the end (delta: -42.7 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:02:12,181 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 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.09 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.28 ms. Allocated memory is still 140.0 MB. Free memory was 93.1 MB in the beginning and 91.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.02 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 167.1 MB in the end (delta: -75.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14802.26 ms. Allocated memory was 202.4 MB in the beginning and 322.4 MB in the end (delta: 120.1 MB). Free memory was 166.2 MB in the beginning and 208.9 MB in the end (delta: -42.7 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 265 SDtfs, 288 SDslu, 981 SDs, 0 SdLazy, 740 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 42 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 276 ConstructedInterpolants, 0 QuantifiedInterpolants, 24013 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 48/58 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...