/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:22:44,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:22:44,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:22:44,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:22:44,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:22:44,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:22:44,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:22:44,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:22:44,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:22:44,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:22:44,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:22:44,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:22:44,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:22:44,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:22:44,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:22:44,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:22:44,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:22:44,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:22:44,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:22:45,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:22:45,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:22:45,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:22:45,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:22:45,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:22:45,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:22:45,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:22:45,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:22:45,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:22:45,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:22:45,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:22:45,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:22:45,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:22:45,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:22:45,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:22:45,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:22:45,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:22:45,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:22:45,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:22:45,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:22:45,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:22:45,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:22:45,048 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 [2020-09-25 11:22:45,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:22:45,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:22:45,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:22:45,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:22:45,096 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:22:45,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:22:45,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:22:45,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:22:45,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:22:45,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:22:45,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:22:45,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:22:45,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:22:45,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:22:45,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:22:45,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:22:45,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:22:45,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:22:45,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:22:45,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:22:45,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:22:45,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:22:45,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:22:45,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:22:45,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:22:45,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:22:45,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:22:45,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:22:45,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:22:45,103 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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:22:45,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:22:45,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:22:45,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:22:45,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:22:45,595 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:22:45,596 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 11:22:45,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df9bb7ead/6b376dfd81184f6598f23e8a42167cb7/FLAG27ca8cf04 [2020-09-25 11:22:46,224 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:22:46,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 11:22:46,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df9bb7ead/6b376dfd81184f6598f23e8a42167cb7/FLAG27ca8cf04 [2020-09-25 11:22:46,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df9bb7ead/6b376dfd81184f6598f23e8a42167cb7 [2020-09-25 11:22:46,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:22:46,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:22:46,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:22:46,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:22:46,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:22:46,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:22:46" (1/1) ... [2020-09-25 11:22:46,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c6f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46, skipping insertion in model container [2020-09-25 11:22:46,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:22:46" (1/1) ... [2020-09-25 11:22:46,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:22:46,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:22:46,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:22:46,907 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:22:46,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:22:46,943 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:22:46,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46 WrapperNode [2020-09-25 11:22:46,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:22:46,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:22:46,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:22:46,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:22:47,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46" (1/1) ... [2020-09-25 11:22:47,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46" (1/1) ... [2020-09-25 11:22:47,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46" (1/1) ... [2020-09-25 11:22:47,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46" (1/1) ... [2020-09-25 11:22:47,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46" (1/1) ... [2020-09-25 11:22:47,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46" (1/1) ... [2020-09-25 11:22:47,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46" (1/1) ... [2020-09-25 11:22:47,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:22:47,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:22:47,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:22:47,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:22:47,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46" (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 [2020-09-25 11:22:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:22:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:22:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:22:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 11:22:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:22:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:22:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:22:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:22:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 11:22:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:22:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:22:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:22:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:22:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:22:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:22:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:22:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:22:47,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:22:47,531 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 11:22:47,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:22:47 BoogieIcfgContainer [2020-09-25 11:22:47,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:22:47,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:22:47,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:22:47,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:22:47,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:22:46" (1/3) ... [2020-09-25 11:22:47,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ed9f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:22:47, skipping insertion in model container [2020-09-25 11:22:47,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:22:46" (2/3) ... [2020-09-25 11:22:47,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ed9f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:22:47, skipping insertion in model container [2020-09-25 11:22:47,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:22:47" (3/3) ... [2020-09-25 11:22:47,546 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-09-25 11:22:47,558 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:22:47,569 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:22:47,591 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:22:47,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:22:47,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:22:47,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:22:47,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:22:47,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:22:47,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:22:47,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:22:47,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:22:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-25 11:22:47,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 11:22:47,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:22:47,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:22:47,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:22:47,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:22:47,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-09-25 11:22:47,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:22:47,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769210066] [2020-09-25 11:22:47,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:22:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:47,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:48,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:48,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 11:22:48,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:22:48,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 11:22:48,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:48,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:22:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 11:22:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 11:22:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:22:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:22:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:48,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:48,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:48,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:22:48,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:48,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:22:48,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:48,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:22:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:22:48,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:48,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:22:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:48,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:48,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:22:48,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:22:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 11:22:48,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:48,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:22:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:22:48,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:22:48,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769210066] [2020-09-25 11:22:48,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:22:48,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:22:48,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641246076] [2020-09-25 11:22:48,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:22:48,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:22:48,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:22:48,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:22:48,444 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 5 states. [2020-09-25 11:22:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:22:48,743 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2020-09-25 11:22:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:22:48,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 11:22:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:22:48,762 INFO L225 Difference]: With dead ends: 109 [2020-09-25 11:22:48,763 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 11:22:48,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:22:48,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 11:22:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-09-25 11:22:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:22:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 11:22:48,839 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-25 11:22:48,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:22:48,840 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 11:22:48,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:22:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 11:22:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 11:22:48,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:22:48,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:22:48,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:22:48,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:22:48,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:22:48,844 INFO L82 PathProgramCache]: Analyzing trace with hash 215899159, now seen corresponding path program 1 times [2020-09-25 11:22:48,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:22:48,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115308458] [2020-09-25 11:22:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:22:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:48,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:49,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:50,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:50,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:22:50,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:22:50,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1520 [2020-09-25 11:22:50,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:50,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:50,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:22:50,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 11:22:50,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:22:50,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:22:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:50,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:50,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:22:50,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:50,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:22:50,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:50,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:22:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:22:50,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:50,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:22:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:50,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:50,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:22:50,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:22:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:22:50,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:50,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:22:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:22:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:22:50,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:22:50,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115308458] [2020-09-25 11:22:50,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:22:50,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:22:50,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392798738] [2020-09-25 11:22:50,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:22:50,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:22:50,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:22:50,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:22:50,699 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 14 states. [2020-09-25 11:22:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:22:51,553 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2020-09-25 11:22:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:22:51,553 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-09-25 11:22:51,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:22:51,556 INFO L225 Difference]: With dead ends: 128 [2020-09-25 11:22:51,556 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 11:22:51,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:22:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 11:22:51,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2020-09-25 11:22:51,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 11:22:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-09-25 11:22:51,588 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 36 [2020-09-25 11:22:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:22:51,589 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-09-25 11:22:51,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:22:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-09-25 11:22:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 11:22:51,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:22:51,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:22:51,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:22:51,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:22:51,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:22:51,593 INFO L82 PathProgramCache]: Analyzing trace with hash -253984627, now seen corresponding path program 1 times [2020-09-25 11:22:51,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:22:51,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150993173] [2020-09-25 11:22:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:22:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:53,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:53,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:22:53,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:22:53,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-09-25 11:22:53,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:53,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:22:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:22:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:22:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:22:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:53,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:53,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:53,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:22:53,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:22:53,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:53,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:53,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:22:53,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:53,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:22:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:53,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:22:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:53,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:53,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:53,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 11:22:53,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:53,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 11:22:53,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:53,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:22:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:22:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:22:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:22:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:22:53,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150993173] [2020-09-25 11:22:53,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:22:53,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:22:53,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589865895] [2020-09-25 11:22:53,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:22:53,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:22:53,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:22:53,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:22:53,292 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 9 states. [2020-09-25 11:22:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:22:53,651 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2020-09-25 11:22:53,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:22:53,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-09-25 11:22:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:22:53,653 INFO L225 Difference]: With dead ends: 129 [2020-09-25 11:22:53,653 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 11:22:53,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:22:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 11:22:53,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-09-25 11:22:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 11:22:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-09-25 11:22:53,664 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 43 [2020-09-25 11:22:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:22:53,664 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-09-25 11:22:53,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:22:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-09-25 11:22:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 11:22:53,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:22:53,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:22:53,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:22:53,672 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:22:53,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:22:53,672 INFO L82 PathProgramCache]: Analyzing trace with hash 825760649, now seen corresponding path program 2 times [2020-09-25 11:22:53,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:22:53,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963416820] [2020-09-25 11:22:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:22:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:53,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:53,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:55,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:55,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 11:22:55,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:22:55,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2282 [2020-09-25 11:22:55,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:55,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:22:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:22:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:22:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:22:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:56,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:56,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:56,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:22:56,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:22:56,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:56,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:22:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:22:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:22:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:56,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:22:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:22:56,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:22:56,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:22:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 11:22:56,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:22:56,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:22:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:22:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:22:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:22:56,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:22:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:22:56,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963416820] [2020-09-25 11:22:56,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:22:56,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:22:56,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744764155] [2020-09-25 11:22:56,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:22:56,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:22:56,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:22:56,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:22:56,416 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 11 states. [2020-09-25 11:22:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:22:56,877 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-09-25 11:22:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:22:56,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-09-25 11:22:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:22:56,880 INFO L225 Difference]: With dead ends: 135 [2020-09-25 11:22:56,880 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 11:22:56,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:22:56,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 11:22:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-09-25 11:22:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 11:22:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-09-25 11:22:56,898 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 49 [2020-09-25 11:22:56,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:22:56,899 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-09-25 11:22:56,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:22:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-09-25 11:22:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 11:22:56,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:22:56,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:22:56,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:22:56,904 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:22:56,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:22:56,905 INFO L82 PathProgramCache]: Analyzing trace with hash 328894853, now seen corresponding path program 3 times [2020-09-25 11:22:56,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:22:56,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674185243] [2020-09-25 11:22:56,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:22:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:22:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:22:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:00,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 11:23:00,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3298 [2020-09-25 11:23:00,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:00,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:23:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:23:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 11:23:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:00,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:00,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:00,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:00,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:00,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:23:00,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:00,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:00,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:00,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:00,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:00,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:00,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:23:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:00,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:23:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 11:23:00,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:00,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:23:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:23:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:23:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:23:00,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674185243] [2020-09-25 11:23:00,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:00,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:23:00,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279756274] [2020-09-25 11:23:00,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:23:00,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:00,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:23:00,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:23:00,594 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 13 states. [2020-09-25 11:23:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:01,100 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2020-09-25 11:23:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:23:01,100 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-09-25 11:23:01,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:01,102 INFO L225 Difference]: With dead ends: 141 [2020-09-25 11:23:01,102 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 11:23:01,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:23:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 11:23:01,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-09-25 11:23:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 11:23:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-09-25 11:23:01,112 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 55 [2020-09-25 11:23:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:01,113 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-09-25 11:23:01,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:23:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-09-25 11:23:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 11:23:01,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:01,115 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:01,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:23:01,115 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:01,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:01,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1046055553, now seen corresponding path program 4 times [2020-09-25 11:23:01,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:01,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159280460] [2020-09-25 11:23:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:01,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:01,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:05,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:05,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 11:23:05,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:05,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4008 [2020-09-25 11:23:05,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:05,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:23:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:23:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:23:05,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:05,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:05,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:05,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:05,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:23:05,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:05,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:05,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:05,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:05,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:05,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:23:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:05,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:05,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:23:05,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-25 11:23:05,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:05,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:23:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:23:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:23:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:23:05,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159280460] [2020-09-25 11:23:05,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:05,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:23:05,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526734390] [2020-09-25 11:23:05,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:23:05,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:05,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:23:05,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:23:05,706 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 15 states. [2020-09-25 11:23:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:06,362 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2020-09-25 11:23:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:23:06,363 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-09-25 11:23:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:06,365 INFO L225 Difference]: With dead ends: 147 [2020-09-25 11:23:06,366 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 11:23:06,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2020-09-25 11:23:06,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 11:23:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-09-25 11:23:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 11:23:06,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-09-25 11:23:06,377 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 61 [2020-09-25 11:23:06,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:06,378 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-09-25 11:23:06,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:23:06,378 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-09-25 11:23:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:23:06,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:06,380 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:06,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:23:06,380 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:06,380 INFO L82 PathProgramCache]: Analyzing trace with hash 813358717, now seen corresponding path program 5 times [2020-09-25 11:23:06,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:06,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891139249] [2020-09-25 11:23:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:06,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:11,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:11,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:23:11,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:11,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4796 [2020-09-25 11:23:11,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:11,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:23:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:23:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 11:23:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:11,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:11,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:11,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:23:11,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:11,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:11,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:23:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:11,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 11:23:11,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 11:23:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:11,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:23:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:23:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:23:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:23:11,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891139249] [2020-09-25 11:23:11,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:11,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 11:23:11,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440081067] [2020-09-25 11:23:11,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 11:23:11,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:11,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 11:23:11,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:23:11,829 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 17 states. [2020-09-25 11:23:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:12,663 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2020-09-25 11:23:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 11:23:12,664 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-09-25 11:23:12,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:12,666 INFO L225 Difference]: With dead ends: 153 [2020-09-25 11:23:12,666 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 11:23:12,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 11:23:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 11:23:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-09-25 11:23:12,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 11:23:12,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-09-25 11:23:12,677 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 67 [2020-09-25 11:23:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:12,679 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-09-25 11:23:12,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 11:23:12,679 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-09-25 11:23:12,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 11:23:12,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:12,681 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:12,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:23:12,681 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:12,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:12,682 INFO L82 PathProgramCache]: Analyzing trace with hash -38517383, now seen corresponding path program 6 times [2020-09-25 11:23:12,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:12,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569850311] [2020-09-25 11:23:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:12,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 11:23:16,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4202 [2020-09-25 11:23:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:16,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:23:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:23:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:23:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:16,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:16,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:16,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:23:16,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:16,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:16,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:23:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:17,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:17,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:23:17,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-25 11:23:17,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:17,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:23:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:23:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 11:23:17,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:23:17,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569850311] [2020-09-25 11:23:17,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:17,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 11:23:17,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885352368] [2020-09-25 11:23:17,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 11:23:17,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:17,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 11:23:17,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:23:17,678 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 19 states. [2020-09-25 11:23:18,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:18,633 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2020-09-25 11:23:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 11:23:18,634 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2020-09-25 11:23:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:18,636 INFO L225 Difference]: With dead ends: 159 [2020-09-25 11:23:18,636 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 11:23:18,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=418, Invalid=1304, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 11:23:18,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 11:23:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2020-09-25 11:23:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 11:23:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-09-25 11:23:18,646 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 73 [2020-09-25 11:23:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:18,647 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-09-25 11:23:18,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 11:23:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-09-25 11:23:18,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 11:23:18,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:18,649 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:18,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:23:18,649 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:18,650 INFO L82 PathProgramCache]: Analyzing trace with hash 174817141, now seen corresponding path program 7 times [2020-09-25 11:23:18,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:18,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516216384] [2020-09-25 11:23:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:18,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:23,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:23,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:23:23,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:23:23,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:23,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:23:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:23:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:23:23,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:23,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:23,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:23,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:23:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:23,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:23,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:23:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:23,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:24,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:24,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:23:24,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-09-25 11:23:24,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:24,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:23:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:23:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:23:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:23:25,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516216384] [2020-09-25 11:23:25,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:25,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 11:23:25,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957829079] [2020-09-25 11:23:25,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 11:23:25,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:25,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 11:23:25,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:23:25,041 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 21 states. [2020-09-25 11:23:25,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:25,953 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2020-09-25 11:23:25,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 11:23:25,953 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 79 [2020-09-25 11:23:25,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:25,955 INFO L225 Difference]: With dead ends: 165 [2020-09-25 11:23:25,955 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 11:23:25,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=413, Invalid=1069, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 11:23:25,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 11:23:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2020-09-25 11:23:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 11:23:25,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-09-25 11:23:25,966 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 79 [2020-09-25 11:23:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:25,967 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-09-25 11:23:25,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 11:23:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-09-25 11:23:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 11:23:25,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:25,969 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:25,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:23:25,969 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:25,969 INFO L82 PathProgramCache]: Analyzing trace with hash -944354191, now seen corresponding path program 8 times [2020-09-25 11:23:25,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:25,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604418053] [2020-09-25 11:23:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:26,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:30,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:30,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 11:23:30,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:23:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:23:30,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:30,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 11:23:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:23:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 11:23:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:23:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:23:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:31,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:31,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:23:31,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:31,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:23:31,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:31,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:31,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:23:31,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:23:31,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:23:31,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:23:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:31,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:31,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:23:31,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:23:31,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:23:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-09-25 11:23:31,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:23:31,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:23:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 11:23:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:23:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:23:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:23:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:23:32,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604418053] [2020-09-25 11:23:32,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:23:32,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 11:23:32,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705351898] [2020-09-25 11:23:32,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 11:23:32,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:23:32,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 11:23:32,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:23:32,157 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 23 states. [2020-09-25 11:23:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:23:33,413 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2020-09-25 11:23:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 11:23:33,414 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 85 [2020-09-25 11:23:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:23:33,415 INFO L225 Difference]: With dead ends: 171 [2020-09-25 11:23:33,415 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 11:23:33,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=656, Invalid=1996, Unknown=0, NotChecked=0, Total=2652 [2020-09-25 11:23:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 11:23:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2020-09-25 11:23:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 11:23:33,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-09-25 11:23:33,426 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 85 [2020-09-25 11:23:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:23:33,427 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-09-25 11:23:33,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 11:23:33,427 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-09-25 11:23:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 11:23:33,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:23:33,429 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:23:33,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:23:33,429 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:23:33,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:23:33,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1868196973, now seen corresponding path program 9 times [2020-09-25 11:23:33,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:23:33,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630192797] [2020-09-25 11:23:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:23:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:23:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:23:36,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking...