/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:43,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:43,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:43,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:43,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:43,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:43,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:43,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:43,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:43,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:43,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:43,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:43,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:43,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:43,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:43,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:43,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:43,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:43,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:43,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:43,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:43,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:43,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:43,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:43,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:43,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:43,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:43,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:43,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:43,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:43,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:43,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:43,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:43,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:43,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:43,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:43,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:43,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:43,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:43,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:43,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:43,195 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 07:57:43,246 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:43,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:43,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:43,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:43,249 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:43,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:43,250 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:43,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:43,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:43,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:43,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:43,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:43,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:43,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:43,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:43,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:43,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:43,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:43,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:43,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:43,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:43,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:43,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:43,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:43,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:43,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:43,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:43,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:43,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:43,255 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:57:43,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:43,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:43,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:43,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:43,735 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:43,737 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 07:57:43,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba0e1ba15/899a674c38fe4ebba7935948f5ddae2e/FLAG50b6fcf69 [2020-09-25 07:57:44,426 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:44,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 07:57:44,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba0e1ba15/899a674c38fe4ebba7935948f5ddae2e/FLAG50b6fcf69 [2020-09-25 07:57:44,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba0e1ba15/899a674c38fe4ebba7935948f5ddae2e [2020-09-25 07:57:44,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:44,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:44,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:44,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:44,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:44,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:44" (1/1) ... [2020-09-25 07:57:44,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bef9f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:44, skipping insertion in model container [2020-09-25 07:57:44,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:44" (1/1) ... [2020-09-25 07:57:44,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:44,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:45,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:45,385 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:45,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:45,720 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:45,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45 WrapperNode [2020-09-25 07:57:45,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:45,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:45,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:45,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:45,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:45,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:45,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:45,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:45,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (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 07:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:45,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:45,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:45,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:45,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:45,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:45,987 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:45,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:45,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:45,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:47,781 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:47,782 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:47,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:47 BoogieIcfgContainer [2020-09-25 07:57:47,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:47,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:47,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:47,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:47,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:44" (1/3) ... [2020-09-25 07:57:47,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366a6418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:47, skipping insertion in model container [2020-09-25 07:57:47,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (2/3) ... [2020-09-25 07:57:47,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366a6418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:47, skipping insertion in model container [2020-09-25 07:57:47,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:47" (3/3) ... [2020-09-25 07:57:47,805 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 07:57:47,820 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:47,832 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:47,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:47,898 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:47,899 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:47,899 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:47,899 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:47,899 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:47,899 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:47,900 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:47,900 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 07:57:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 07:57:47,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:47,950 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] [2020-09-25 07:57:47,950 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:47,959 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 07:57:47,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:47,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757849331] [2020-09-25 07:57:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:48,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:48,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 07:57:48,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-09-25 07:57:48,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:48,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 07:57:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:57:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:49,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:49,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:49,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:57:49,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:49,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:49,108 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 07:57:49,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757849331] [2020-09-25 07:57:49,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:49,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:57:49,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327376550] [2020-09-25 07:57:49,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:49,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:49,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:49,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:49,143 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 07:57:53,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:53,314 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 07:57:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:57:53,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 07:57:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:53,348 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 07:57:53,348 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 07:57:53,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 07:57:53,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 07:57:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 07:57:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 07:57:53,492 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 73 [2020-09-25 07:57:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:53,493 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 07:57:53,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 07:57:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 07:57:53,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:53,504 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 07:57:53,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:53,505 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:53,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:53,505 INFO L82 PathProgramCache]: Analyzing trace with hash -893839862, now seen corresponding path program 1 times [2020-09-25 07:57:53,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:53,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548513688] [2020-09-25 07:57:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:57,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:57,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 07:57:57,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3605 [2020-09-25 07:57:57,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:57,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:57:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:57,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:57,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:57:57,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:57,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:57,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:57,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 07:57:57,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 07:57:57,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:57,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 07:57:57,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:57,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548513688] [2020-09-25 07:57:57,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:57,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:57,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490629192] [2020-09-25 07:57:57,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:57,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:57,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:57,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:57,552 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 7 states. [2020-09-25 07:58:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:00,843 INFO L93 Difference]: Finished difference Result 2728 states and 3594 transitions. [2020-09-25 07:58:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:58:00,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 07:58:00,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:00,864 INFO L225 Difference]: With dead ends: 2728 [2020-09-25 07:58:00,864 INFO L226 Difference]: Without dead ends: 1746 [2020-09-25 07:58:00,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-09-25 07:58:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1602. [2020-09-25 07:58:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1602 states. [2020-09-25 07:58:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 1981 transitions. [2020-09-25 07:58:00,958 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 1981 transitions. Word has length 160 [2020-09-25 07:58:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:00,961 INFO L479 AbstractCegarLoop]: Abstraction has 1602 states and 1981 transitions. [2020-09-25 07:58:00,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 1981 transitions. [2020-09-25 07:58:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 07:58:00,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:00,975 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:00,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:58:00,976 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:00,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:00,977 INFO L82 PathProgramCache]: Analyzing trace with hash 760434101, now seen corresponding path program 1 times [2020-09-25 07:58:00,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:00,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525576885] [2020-09-25 07:58:00,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:02,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:06,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:06,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 07:58:06,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:58:06,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 07:58:06,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:06,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 07:58:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 07:58:06,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:06,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:06,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:06,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:06,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:06,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:06,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:58:06,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:06,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:06,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:06,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:06,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:06,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:58:06,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:06,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 07:58:06,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:06,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 07:58:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:58:06,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 07:58:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:06,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:06,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 07:58:06,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:06,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 07:58:06,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:06,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 07:58:06,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:06,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525576885] [2020-09-25 07:58:06,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:06,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:58:06,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446165898] [2020-09-25 07:58:06,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:06,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:06,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:06,634 INFO L87 Difference]: Start difference. First operand 1602 states and 1981 transitions. Second operand 7 states. [2020-09-25 07:58:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:09,998 INFO L93 Difference]: Finished difference Result 3844 states and 4902 transitions. [2020-09-25 07:58:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:58:09,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-09-25 07:58:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:10,011 INFO L225 Difference]: With dead ends: 3844 [2020-09-25 07:58:10,011 INFO L226 Difference]: Without dead ends: 2062 [2020-09-25 07:58:10,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2020-09-25 07:58:10,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2002. [2020-09-25 07:58:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2002 states. [2020-09-25 07:58:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2409 transitions. [2020-09-25 07:58:10,069 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2409 transitions. Word has length 242 [2020-09-25 07:58:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:10,070 INFO L479 AbstractCegarLoop]: Abstraction has 2002 states and 2409 transitions. [2020-09-25 07:58:10,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2409 transitions. [2020-09-25 07:58:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 07:58:10,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:10,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:10,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:58:10,075 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:10,075 INFO L82 PathProgramCache]: Analyzing trace with hash -303069568, now seen corresponding path program 1 times [2020-09-25 07:58:10,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:10,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961029278] [2020-09-25 07:58:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:15,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 07:58:15,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:58:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 07:58:15,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:15,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:58:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 07:58:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-25 07:58:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:15,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:15,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:15,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:58:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:15,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:58:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:15,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:15,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:58:15,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:58:15,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 07:58:15,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:15,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:58:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:58:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:15,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 07:58:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:15,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:15,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 07:58:15,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:15,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 07:58:15,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:15,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 07:58:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:16,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961029278] [2020-09-25 07:58:16,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:16,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:58:16,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276991524] [2020-09-25 07:58:16,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:58:16,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:16,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:58:16,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:58:16,258 INFO L87 Difference]: Start difference. First operand 2002 states and 2409 transitions. Second operand 10 states. [2020-09-25 07:58:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:21,573 INFO L93 Difference]: Finished difference Result 4441 states and 5388 transitions. [2020-09-25 07:58:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:58:21,575 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 249 [2020-09-25 07:58:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:21,586 INFO L225 Difference]: With dead ends: 4441 [2020-09-25 07:58:21,586 INFO L226 Difference]: Without dead ends: 1890 [2020-09-25 07:58:21,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:58:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2020-09-25 07:58:21,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1741. [2020-09-25 07:58:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1741 states. [2020-09-25 07:58:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 1888 transitions. [2020-09-25 07:58:21,644 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 1888 transitions. Word has length 249 [2020-09-25 07:58:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:21,645 INFO L479 AbstractCegarLoop]: Abstraction has 1741 states and 1888 transitions. [2020-09-25 07:58:21,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:58:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 1888 transitions. [2020-09-25 07:58:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-25 07:58:21,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:21,652 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:58:21,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:58:21,653 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:21,653 INFO L82 PathProgramCache]: Analyzing trace with hash -505865555, now seen corresponding path program 1 times [2020-09-25 07:58:21,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:21,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12642210] [2020-09-25 07:58:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:21,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:26,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:26,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-09-25 07:58:26,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:58:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:58:26,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:26,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:26,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:26,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 07:58:26,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-25 07:58:26,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:26,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:58:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:26,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:26,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:27,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:27,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 07:58:27,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 07:58:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:27,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 07:58:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 07:58:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:27,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 07:58:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 07:58:27,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:27,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 07:58:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:27,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12642210] [2020-09-25 07:58:27,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:27,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:58:27,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776979525] [2020-09-25 07:58:27,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:27,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:27,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:27,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:27,722 INFO L87 Difference]: Start difference. First operand 1741 states and 1888 transitions. Second operand 7 states. [2020-09-25 07:58:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:29,894 INFO L93 Difference]: Finished difference Result 4272 states and 4696 transitions. [2020-09-25 07:58:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:58:29,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-09-25 07:58:29,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:29,913 INFO L225 Difference]: With dead ends: 4272 [2020-09-25 07:58:29,913 INFO L226 Difference]: Without dead ends: 2546 [2020-09-25 07:58:29,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2020-09-25 07:58:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2322. [2020-09-25 07:58:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-09-25 07:58:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 2505 transitions. [2020-09-25 07:58:29,980 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 2505 transitions. Word has length 380 [2020-09-25 07:58:29,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:29,982 INFO L479 AbstractCegarLoop]: Abstraction has 2322 states and 2505 transitions. [2020-09-25 07:58:29,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 2505 transitions. [2020-09-25 07:58:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-09-25 07:58:29,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:29,993 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:29,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:58:29,994 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:29,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:29,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1540699335, now seen corresponding path program 1 times [2020-09-25 07:58:29,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:29,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598337624] [2020-09-25 07:58:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:30,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking...