/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-simple/fibo_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:03:46,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:03:46,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:03:46,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:03:46,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:03:46,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:03:46,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:03:46,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:03:46,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:03:46,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:03:46,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:03:46,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:03:46,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:03:46,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:03:46,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:03:46,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:03:46,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:03:46,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:03:46,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:03:46,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:03:46,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:03:46,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:03:46,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:03:46,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:03:46,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:03:46,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:03:46,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:03:46,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:03:46,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:03:46,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:03:46,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:03:46,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:03:46,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:03:46,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:03:46,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:03:46,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:03:46,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:03:46,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:03:46,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:03:46,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:03:46,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:03:46,985 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 17:03:47,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:03:47,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:03:47,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:03:47,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:03:47,034 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:03:47,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:03:47,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:03:47,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:03:47,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:03:47,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:03:47,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:03:47,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:03:47,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:03:47,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:03:47,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:03:47,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:03:47,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:03:47,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:03:47,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:03:47,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:03:47,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:03:47,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:03:47,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:03:47,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:03:47,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:03:47,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:03:47,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:03:47,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:03:47,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:03:47,041 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 17:03:47,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:03:47,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:03:47,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:03:47,544 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:03:47,544 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:03:47,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-24 17:03:47,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b9d492f6/a813339bc0f742858e9dcc232ecfb4f7/FLAG8a3ab3cd1 [2020-09-24 17:03:48,128 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:03:48,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-24 17:03:48,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b9d492f6/a813339bc0f742858e9dcc232ecfb4f7/FLAG8a3ab3cd1 [2020-09-24 17:03:48,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b9d492f6/a813339bc0f742858e9dcc232ecfb4f7 [2020-09-24 17:03:48,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:03:48,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:03:48,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:03:48,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:03:48,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:03:48,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:03:48" (1/1) ... [2020-09-24 17:03:48,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48, skipping insertion in model container [2020-09-24 17:03:48,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:03:48" (1/1) ... [2020-09-24 17:03:48,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:03:48,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:03:48,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:03:48,761 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:03:48,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:03:48,792 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:03:48,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48 WrapperNode [2020-09-24 17:03:48,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:03:48,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:03:48,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:03:48,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:03:48,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48" (1/1) ... [2020-09-24 17:03:48,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48" (1/1) ... [2020-09-24 17:03:48,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48" (1/1) ... [2020-09-24 17:03:48,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48" (1/1) ... [2020-09-24 17:03:48,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48" (1/1) ... [2020-09-24 17:03:48,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48" (1/1) ... [2020-09-24 17:03:48,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48" (1/1) ... [2020-09-24 17:03:48,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:03:48,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:03:48,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:03:48,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:03:48,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48" (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 17:03:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:03:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:03:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 17:03:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:03:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:03:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:03:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 17:03:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:03:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:03:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:03:49,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:03:49,192 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:03:49,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:03:49 BoogieIcfgContainer [2020-09-24 17:03:49,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:03:49,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:03:49,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:03:49,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:03:49,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:03:48" (1/3) ... [2020-09-24 17:03:49,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3c78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:03:49, skipping insertion in model container [2020-09-24 17:03:49,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:03:48" (2/3) ... [2020-09-24 17:03:49,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3c78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:03:49, skipping insertion in model container [2020-09-24 17:03:49,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:03:49" (3/3) ... [2020-09-24 17:03:49,208 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-24 17:03:49,221 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:03:49,232 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:03:49,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:03:49,299 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:03:49,299 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:03:49,300 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:03:49,300 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:03:49,300 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:03:49,300 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:03:49,300 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:03:49,301 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:03:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 17:03:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 17:03:49,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:03:49,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:03:49,342 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:03:49,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:03:49,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 17:03:49,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:03:49,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776670928] [2020-09-24 17:03:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:03:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:49,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:49,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:03:49,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 17:03:49,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:49,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:03:49,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:03:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:03:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:49,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:49,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:03:49,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:03:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:03:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:49,671 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:49,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:03:49,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:49,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 17:03:49,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:49,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:49,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:03:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:03:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:03:49,715 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 17:03:49,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776670928] [2020-09-24 17:03:49,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:03:49,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:03:49,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502618307] [2020-09-24 17:03:49,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:03:49,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:03:49,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:03:49,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:03:49,743 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 17:03:49,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:03:49,872 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 17:03:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:03:49,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 17:03:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:03:49,888 INFO L225 Difference]: With dead ends: 44 [2020-09-24 17:03:49,888 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 17:03:49,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:03:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 17:03:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 17:03:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 17:03:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 17:03:49,954 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 17:03:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:03:49,954 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 17:03:49,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:03:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 17:03:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 17:03:49,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:03:49,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:03:49,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:03:49,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:03:49,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:03:49,959 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 17:03:49,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:03:49,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352243281] [2020-09-24 17:03:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:03:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:50,047 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:50,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 17:03:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 17:03:50,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:03:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:03:50,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:50,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:03:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:50,077 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:50,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:03:50,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:50,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:03:50,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:03:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:50,130 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:50,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:03:50,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 17:03:50,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:03:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:03:50,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:50,165 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 17:03:50,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352243281] [2020-09-24 17:03:50,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:03:50,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:03:50,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816626595] [2020-09-24 17:03:50,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:03:50,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:03:50,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:03:50,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:03:50,170 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 17:03:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:03:50,240 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 17:03:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:03:50,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 17:03:50,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:03:50,242 INFO L225 Difference]: With dead ends: 36 [2020-09-24 17:03:50,242 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 17:03:50,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:03:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 17:03:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 17:03:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 17:03:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 17:03:50,253 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 17:03:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:03:50,253 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 17:03:50,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:03:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 17:03:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 17:03:50,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:03:50,256 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:03:50,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:03:50,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:03:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:03:50,257 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 17:03:50,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:03:50,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635509856] [2020-09-24 17:03:50,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:03:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:50,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:50,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:50,908 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:50,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 17:03:50,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:03:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-09-24 17:03:50,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:03:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:03:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:03:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:50,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:03:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:50,926 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:50,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:03:50,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:03:50,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:50,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:03:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:50,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:51,172 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:51,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:03:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:03:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-24 17:03:51,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:03:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 17:03:51,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:03:51,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:51,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:03:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:51,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:51,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:03:51,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:51,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:03:51,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:51,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:03:51,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:03:51,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:51,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 17:03:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:51,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:51,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:03:51,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:03:51,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:03:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 17:03:51,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635509856] [2020-09-24 17:03:51,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:03:51,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:03:51,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623647525] [2020-09-24 17:03:51,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:03:51,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:03:51,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:03:51,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:03:51,262 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 17:03:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:03:51,383 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-24 17:03:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:03:51,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 17:03:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:03:51,385 INFO L225 Difference]: With dead ends: 52 [2020-09-24 17:03:51,386 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 17:03:51,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:03:51,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 17:03:51,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 17:03:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 17:03:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 17:03:51,396 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-24 17:03:51,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:03:51,396 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 17:03:51,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:03:51,396 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 17:03:51,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 17:03:51,398 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:03:51,399 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:03:51,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:03:51,399 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:03:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:03:51,400 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-24 17:03:51,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:03:51,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681395084] [2020-09-24 17:03:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:03:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:51,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:51,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:51,796 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:51,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:03:51,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:03:51,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-24 17:03:51,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:03:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:03:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:03:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:03:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:51,813 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:51,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:03:51,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:51,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:03:51,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:51,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:03:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:52,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 17:03:52,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:03:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-24 17:03:52,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:03:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:03:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 17:03:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:03:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,170 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:52,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:03:52,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:52,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:03:52,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:03:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:03:52,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:52,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:03:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:52,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,184 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:52,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:03:52,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:03:52,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:03:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:03:52,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 17:03:52,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681395084] [2020-09-24 17:03:52,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:03:52,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:03:52,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880545846] [2020-09-24 17:03:52,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:03:52,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:03:52,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:03:52,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:03:52,211 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-24 17:03:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:03:52,279 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-24 17:03:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:03:52,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 17:03:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:03:52,282 INFO L225 Difference]: With dead ends: 42 [2020-09-24 17:03:52,282 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 17:03:52,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:03:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 17:03:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-24 17:03:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 17:03:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-24 17:03:52,291 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-24 17:03:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:03:52,292 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-24 17:03:52,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:03:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-24 17:03:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 17:03:52,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:03:52,294 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] [2020-09-24 17:03:52,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:03:52,294 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:03:52,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:03:52,295 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 17:03:52,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:03:52,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695374112] [2020-09-24 17:03:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:03:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:52,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:52,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 17:03:52,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:03:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-24 17:03:52,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:03:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 17:03:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:03:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:52,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:03:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,784 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:52,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:03:52,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:52,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:03:52,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:52,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:03:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,900 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:52,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:03:52,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:03:52,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 17:03:52,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:03:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:03:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:03:52,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:03:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:52,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:03:52,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:52,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:03:52,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:03:52,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:03:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:52,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:52,988 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:03:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:03:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 17:03:52,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:03:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:03:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:03:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 17:03:53,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695374112] [2020-09-24 17:03:53,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:03:53,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 17:03:53,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043501619] [2020-09-24 17:03:53,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:03:53,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:03:53,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:03:53,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:03:53,007 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-09-24 17:03:53,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:03:53,131 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2020-09-24 17:03:53,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:03:53,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 17:03:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:03:53,135 INFO L225 Difference]: With dead ends: 72 [2020-09-24 17:03:53,135 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 17:03:53,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:03:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 17:03:53,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-24 17:03:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 17:03:53,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-24 17:03:53,156 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 35 [2020-09-24 17:03:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:03:53,157 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-24 17:03:53,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:03:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-24 17:03:53,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 17:03:53,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:03:53,164 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:03:53,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:03:53,165 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:03:53,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:03:53,165 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 17:03:53,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:03:53,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478783174] [2020-09-24 17:03:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:03:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:55,320 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:55,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 17:03:55,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:03:55,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2127 [2020-09-24 17:03:55,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:03:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:03:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 17:03:55,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:03:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:55,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:55,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:03:55,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:55,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:03:55,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:55,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:55,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:03:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:55,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:57,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 17:03:57,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:03:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1935 [2020-09-24 17:03:57,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:03:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:03:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:03:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:03:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:57,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 17:03:57,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:03:57,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:03:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 17:03:57,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:57,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:03:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:57,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,366 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:57,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:03:57,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:57,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:03:57,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:57,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:57,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:57,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:03:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,375 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:57,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:03:57,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:57,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:03:57,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:03:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:03:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:03:57,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 17:03:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:57,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:03:57,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:03:57,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:03:57,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 17:03:57,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:03:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:03:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:03:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:03:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:03:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 17:03:57,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478783174] [2020-09-24 17:03:57,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:03:57,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:03:57,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655314672] [2020-09-24 17:03:57,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:03:57,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:03:57,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:03:57,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:03:57,435 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-24 17:03:57,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:03:57,578 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-24 17:03:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:03:57,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 17:03:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:03:57,580 INFO L225 Difference]: With dead ends: 50 [2020-09-24 17:03:57,580 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 17:03:57,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:03:57,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 17:03:57,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-24 17:03:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 17:03:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-24 17:03:57,589 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 52 [2020-09-24 17:03:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:03:57,589 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-24 17:03:57,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:03:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-24 17:03:57,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 17:03:57,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:03:57,593 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:03:57,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:03:57,595 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:03:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:03:57,595 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-24 17:03:57,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:03:57,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876435661] [2020-09-24 17:03:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:03:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:03:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:58,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:03:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:04,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking...