/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:20:20,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:20:20,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:20:20,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:20:20,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:20:20,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:20:20,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:20:20,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:20:20,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:20:20,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:20:20,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:20:20,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:20:20,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:20:20,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:20:20,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:20:20,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:20:20,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:20:20,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:20:20,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:20:20,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:20:20,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:20:20,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:20:20,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:20:20,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:20:20,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:20:20,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:20:20,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:20:20,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:20:20,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:20:20,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:20:20,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:20:20,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:20:20,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:20:20,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:20:20,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:20:20,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:20:20,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:20:20,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:20:20,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:20:20,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:20:20,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:20:20,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:20:20,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:20:20,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:20:20,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:20:20,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:20:20,812 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:20:20,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:20:20,812 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:20:20,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:20:20,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:20:20,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:20:20,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:20:20,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:20:20,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:20:20,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:20:20,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:20:20,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:20:20,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:20:20,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:20:20,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:20:20,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:20:20,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:20:20,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:20,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:20:20,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:20:20,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:20:20,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:20:20,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:20:20,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:20:20,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:20:20,818 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:20:21,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:20:21,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:20:21,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:20:21,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:20:21,338 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:20:21,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-24 18:20:21,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fad94178/bcebce16733e4f72a9e6c11e9464442c/FLAG4eb29a5fb [2020-09-24 18:20:22,059 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:20:22,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-24 18:20:22,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fad94178/bcebce16733e4f72a9e6c11e9464442c/FLAG4eb29a5fb [2020-09-24 18:20:22,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fad94178/bcebce16733e4f72a9e6c11e9464442c [2020-09-24 18:20:22,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:20:22,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:20:22,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:22,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:20:22,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:20:22,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:22" (1/1) ... [2020-09-24 18:20:22,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2c32e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22, skipping insertion in model container [2020-09-24 18:20:22,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:22" (1/1) ... [2020-09-24 18:20:22,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:20:22,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:20:22,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:22,920 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:20:23,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:23,235 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:20:23,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23 WrapperNode [2020-09-24 18:20:23,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:23,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:20:23,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:20:23,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:20:23,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23" (1/1) ... [2020-09-24 18:20:23,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23" (1/1) ... [2020-09-24 18:20:23,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23" (1/1) ... [2020-09-24 18:20:23,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23" (1/1) ... [2020-09-24 18:20:23,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23" (1/1) ... [2020-09-24 18:20:23,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23" (1/1) ... [2020-09-24 18:20:23,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23" (1/1) ... [2020-09-24 18:20:23,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:20:23,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:20:23,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:20:23,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:20:23,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:20:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:20:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:20:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:20:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:20:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:20:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:20:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:20:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:20:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:20:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:20:25,101 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:20:25,101 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:20:25,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:25 BoogieIcfgContainer [2020-09-24 18:20:25,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:20:25,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:20:25,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:20:25,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:20:25,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:20:22" (1/3) ... [2020-09-24 18:20:25,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe95611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:25, skipping insertion in model container [2020-09-24 18:20:25,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:23" (2/3) ... [2020-09-24 18:20:25,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe95611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:25, skipping insertion in model container [2020-09-24 18:20:25,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:25" (3/3) ... [2020-09-24 18:20:25,120 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-24 18:20:25,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:20:25,145 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:20:25,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:20:25,203 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:20:25,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:20:25,203 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:20:25,203 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:20:25,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:20:25,204 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:20:25,204 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:20:25,204 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:20:25,236 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:20:25,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 18:20:25,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:25,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:25,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:25,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:25,265 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-24 18:20:25,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:25,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350103640] [2020-09-24 18:20:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:25,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:30,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 18:20:30,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:20:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:20:30,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:30,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:30,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:20:30,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 18:20:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:20:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:30,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:30,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:20:30,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:20:30,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:30,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350103640] [2020-09-24 18:20:30,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:30,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:20:30,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524351274] [2020-09-24 18:20:30,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:30,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:30,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:30,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:30,887 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-24 18:20:33,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:33,099 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-24 18:20:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:20:33,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-24 18:20:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:33,125 INFO L225 Difference]: With dead ends: 1212 [2020-09-24 18:20:33,126 INFO L226 Difference]: Without dead ends: 638 [2020-09-24 18:20:33,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-24 18:20:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-24 18:20:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:20:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 18:20:33,235 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 112 [2020-09-24 18:20:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:33,236 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 18:20:33,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 18:20:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 18:20:33,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:33,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:33,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:20:33,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:33,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1116167648, now seen corresponding path program 1 times [2020-09-24 18:20:33,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:33,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752010189] [2020-09-24 18:20:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:36,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 18:20:36,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:20:36,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3660 [2020-09-24 18:20:36,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:20:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 18:20:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:37,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:37,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:37,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:37,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:37,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:20:37,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:37,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:20:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:20:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:37,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752010189] [2020-09-24 18:20:37,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:37,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:37,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380374499] [2020-09-24 18:20:37,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:37,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:37,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:37,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:37,229 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-24 18:20:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:38,806 INFO L93 Difference]: Finished difference Result 1531 states and 1909 transitions. [2020-09-24 18:20:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:38,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-24 18:20:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:38,817 INFO L225 Difference]: With dead ends: 1531 [2020-09-24 18:20:38,817 INFO L226 Difference]: Without dead ends: 952 [2020-09-24 18:20:38,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:38,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-09-24 18:20:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 889. [2020-09-24 18:20:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-24 18:20:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1076 transitions. [2020-09-24 18:20:38,883 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1076 transitions. Word has length 133 [2020-09-24 18:20:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:38,883 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1076 transitions. [2020-09-24 18:20:38,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1076 transitions. [2020-09-24 18:20:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 18:20:38,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:38,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:38,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:38,902 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:38,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1479903223, now seen corresponding path program 1 times [2020-09-24 18:20:38,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:38,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21344516] [2020-09-24 18:20:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:43,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-24 18:20:43,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:20:43,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:20:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 18:20:43,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:44,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:44,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:44,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:44,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:44,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:20:44,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:44,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:44,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:44,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:44,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:44,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 18:20:44,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:20:44,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:44,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:44,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:20:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:44,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21344516] [2020-09-24 18:20:44,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:44,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:44,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736533873] [2020-09-24 18:20:44,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:44,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:44,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:44,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:44,236 INFO L87 Difference]: Start difference. First operand 889 states and 1076 transitions. Second operand 5 states. [2020-09-24 18:20:46,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:46,120 INFO L93 Difference]: Finished difference Result 2141 states and 2675 transitions. [2020-09-24 18:20:46,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:46,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-24 18:20:46,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:46,128 INFO L225 Difference]: With dead ends: 2141 [2020-09-24 18:20:46,129 INFO L226 Difference]: Without dead ends: 1276 [2020-09-24 18:20:46,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-09-24 18:20:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1175. [2020-09-24 18:20:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-09-24 18:20:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1457 transitions. [2020-09-24 18:20:46,172 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1457 transitions. Word has length 137 [2020-09-24 18:20:46,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:46,173 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1457 transitions. [2020-09-24 18:20:46,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1457 transitions. [2020-09-24 18:20:46,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 18:20:46,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:46,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:46,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:20:46,179 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:46,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:46,180 INFO L82 PathProgramCache]: Analyzing trace with hash -762171496, now seen corresponding path program 1 times [2020-09-24 18:20:46,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:46,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827395018] [2020-09-24 18:20:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:51,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:51,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 18:20:51,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:20:51,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 18:20:51,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 18:20:51,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:51,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:51,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:51,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:51,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:51,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:51,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:51,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:20:51,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:20:51,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:20:51,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:51,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827395018] [2020-09-24 18:20:51,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:51,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:51,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089063873] [2020-09-24 18:20:51,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:51,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:51,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:51,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:51,489 INFO L87 Difference]: Start difference. First operand 1175 states and 1457 transitions. Second operand 5 states. [2020-09-24 18:20:53,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:53,411 INFO L93 Difference]: Finished difference Result 2944 states and 3773 transitions. [2020-09-24 18:20:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:53,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-24 18:20:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:53,425 INFO L225 Difference]: With dead ends: 2944 [2020-09-24 18:20:53,425 INFO L226 Difference]: Without dead ends: 1793 [2020-09-24 18:20:53,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:53,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2020-09-24 18:20:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1747. [2020-09-24 18:20:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-09-24 18:20:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2186 transitions. [2020-09-24 18:20:53,499 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2186 transitions. Word has length 142 [2020-09-24 18:20:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:53,499 INFO L479 AbstractCegarLoop]: Abstraction has 1747 states and 2186 transitions. [2020-09-24 18:20:53,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2186 transitions. [2020-09-24 18:20:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 18:20:53,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:53,513 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:53,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:53,514 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:53,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:53,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1436243427, now seen corresponding path program 1 times [2020-09-24 18:20:53,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:53,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262998135] [2020-09-24 18:20:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:58,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-24 18:20:58,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:20:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:20:58,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 18:20:58,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 18:20:58,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:58,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:58,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:58,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:58,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:58,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:58,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:58,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:58,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:58,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:58,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:58,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:58,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:58,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:58,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:58,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 18:20:58,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:58,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:20:58,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:20:58,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:20:58,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262998135] [2020-09-24 18:20:58,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:58,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:58,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593618634] [2020-09-24 18:20:58,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:58,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:58,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:58,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:58,857 INFO L87 Difference]: Start difference. First operand 1747 states and 2186 transitions. Second operand 5 states. [2020-09-24 18:21:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:00,801 INFO L93 Difference]: Finished difference Result 3758 states and 4796 transitions. [2020-09-24 18:21:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:00,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-24 18:21:00,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:00,812 INFO L225 Difference]: With dead ends: 3758 [2020-09-24 18:21:00,812 INFO L226 Difference]: Without dead ends: 1701 [2020-09-24 18:21:00,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-09-24 18:21:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1701. [2020-09-24 18:21:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-09-24 18:21:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2091 transitions. [2020-09-24 18:21:00,864 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2091 transitions. Word has length 190 [2020-09-24 18:21:00,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:00,865 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2091 transitions. [2020-09-24 18:21:00,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2091 transitions. [2020-09-24 18:21:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 18:21:00,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:00,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:00,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:00,874 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:00,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:00,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1668073877, now seen corresponding path program 1 times [2020-09-24 18:21:00,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:00,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576185445] [2020-09-24 18:21:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:02,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-24 18:21:02,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:21:02,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-09-24 18:21:02,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 18:21:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:21:02,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:02,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:02,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:02,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:02,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:02,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:02,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:02,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:21:02,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:02,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:02,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:02,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:21:02,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:02,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 18:21:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:02,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:02,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:21:02,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:21:02,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:21:02,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:21:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:02,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:21:02,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:02,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 18:21:02,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-24 18:21:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:02,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 103 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 18:21:03,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576185445] [2020-09-24 18:21:03,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:03,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:03,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044191374] [2020-09-24 18:21:03,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:03,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:03,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:03,032 INFO L87 Difference]: Start difference. First operand 1701 states and 2091 transitions. Second operand 7 states. [2020-09-24 18:21:05,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:05,431 INFO L93 Difference]: Finished difference Result 4225 states and 5729 transitions. [2020-09-24 18:21:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:21:05,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-24 18:21:05,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:05,453 INFO L225 Difference]: With dead ends: 4225 [2020-09-24 18:21:05,453 INFO L226 Difference]: Without dead ends: 2689 [2020-09-24 18:21:05,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:21:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-09-24 18:21:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2204. [2020-09-24 18:21:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2204 states. [2020-09-24 18:21:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2724 transitions. [2020-09-24 18:21:05,555 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2724 transitions. Word has length 217 [2020-09-24 18:21:05,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:05,555 INFO L479 AbstractCegarLoop]: Abstraction has 2204 states and 2724 transitions. [2020-09-24 18:21:05,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:05,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2724 transitions. [2020-09-24 18:21:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-24 18:21:05,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:05,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:05,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:21:05,567 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:05,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1101922233, now seen corresponding path program 1 times [2020-09-24 18:21:05,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:05,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268549340] [2020-09-24 18:21:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:05,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-24 18:21:10,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:21:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 18:21:10,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 18:21:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 18:21:10,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:10,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:10,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:10,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:21:10,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:21:10,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:10,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:10,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:21:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:21:10,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:21:10,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:21:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 18:21:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:10,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:21:10,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 18:21:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 18:21:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:21:11,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268549340] [2020-09-24 18:21:11,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:11,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:11,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132291667] [2020-09-24 18:21:11,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:11,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:11,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:11,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:11,049 INFO L87 Difference]: Start difference. First operand 2204 states and 2724 transitions. Second operand 7 states.