/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:52:23,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:52:23,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:52:23,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:52:23,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:52:23,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:52:23,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:52:23,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:52:23,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:52:23,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:52:23,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:52:23,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:52:23,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:52:23,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:52:23,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:52:23,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:52:23,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:52:23,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:52:23,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:52:23,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:52:23,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:52:23,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:52:23,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:52:23,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:52:23,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:52:23,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:52:23,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:52:23,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:52:23,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:52:23,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:52:23,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:52:23,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:52:23,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:52:23,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:52:23,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:52:23,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:52:23,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:52:23,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:52:23,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:52:23,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:52:23,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:52:23,882 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 [2020-10-12 11:52:23,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:52:23,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:52:23,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:52:23,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:52:23,906 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:52:23,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:52:23,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:52:23,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:52:23,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:52:23,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:52:23,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:52:23,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:52:23,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:52:23,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:52:23,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:52:23,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:52:23,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:52:23,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:52:23,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:52:23,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:52:23,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:52:23,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:52:23,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:52:23,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:52:23,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:52:23,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:52:23,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:52:23,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:52:23,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:52:23,911 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:52:24,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:52:24,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:52:24,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:52:24,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:52:24,228 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:52:24,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label21.c [2020-10-12 11:52:24,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/015cc4aa9/1371cc399c744faeaed59e982d09100b/FLAG2e03d4f50 [2020-10-12 11:52:25,288 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:52:25,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label21.c [2020-10-12 11:52:25,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/015cc4aa9/1371cc399c744faeaed59e982d09100b/FLAG2e03d4f50 [2020-10-12 11:52:25,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/015cc4aa9/1371cc399c744faeaed59e982d09100b [2020-10-12 11:52:25,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:52:25,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:52:25,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:52:25,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:52:25,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:52:25,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:52:25" (1/1) ... [2020-10-12 11:52:25,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cd098f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:25, skipping insertion in model container [2020-10-12 11:52:25,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:52:25" (1/1) ... [2020-10-12 11:52:25,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:52:25,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:52:28,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:52:28,605 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:52:29,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:52:29,834 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:52:29,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29 WrapperNode [2020-10-12 11:52:29,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:52:29,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:52:29,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:52:29,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:52:29,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29" (1/1) ... [2020-10-12 11:52:29,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29" (1/1) ... [2020-10-12 11:52:29,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29" (1/1) ... [2020-10-12 11:52:29,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29" (1/1) ... [2020-10-12 11:52:30,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29" (1/1) ... [2020-10-12 11:52:30,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29" (1/1) ... [2020-10-12 11:52:30,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29" (1/1) ... [2020-10-12 11:52:30,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:52:30,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:52:30,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:52:30,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:52:30,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29" (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 [2020-10-12 11:52:30,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:52:30,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:52:30,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:52:30,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:52:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:52:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:52:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:52:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:52:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:52:30,297 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:52:30,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:52:30,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:52:30,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:52:30,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:52:30,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:52:30,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:52:30,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:52:30,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:52:30,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:52:30,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:52:30,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:52:30,299 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:52:30,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:52:30,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:52:30,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:52:38,197 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:52:38,198 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:52:38,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:52:38 BoogieIcfgContainer [2020-10-12 11:52:38,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:52:38,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:52:38,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:52:38,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:52:38,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:52:25" (1/3) ... [2020-10-12 11:52:38,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8d0485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:52:38, skipping insertion in model container [2020-10-12 11:52:38,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:29" (2/3) ... [2020-10-12 11:52:38,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8d0485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:52:38, skipping insertion in model container [2020-10-12 11:52:38,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:52:38" (3/3) ... [2020-10-12 11:52:38,226 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label21.c [2020-10-12 11:52:38,236 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:52:38,245 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:52:38,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:52:38,289 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:52:38,290 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:52:38,290 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:52:38,290 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:52:38,290 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:52:38,290 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:52:38,290 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:52:38,291 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:52:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 11:52:38,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2020-10-12 11:52:38,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:52:38,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:52:38,499 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:52:38,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:52:38,507 INFO L82 PathProgramCache]: Analyzing trace with hash 416949744, now seen corresponding path program 1 times [2020-10-12 11:52:38,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:52:38,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309887334] [2020-10-12 11:52:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:52:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:52:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:52:44,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:52:44,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1709 [2020-10-12 11:52:44,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:52:44,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 11:52:44,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:52:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:52:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:52:44,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1703 [2020-10-12 11:52:44,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:52:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:52:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:52:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:52:45,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:52:45,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:52:45,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:52:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:52:45,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:52:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:52:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:52:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:52:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:52:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:52:49,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309887334] [2020-10-12 11:52:49,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:52:49,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 11:52:49,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153321622] [2020-10-12 11:52:49,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:52:49,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:52:49,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:52:49,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:52:49,053 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-12 11:53:12,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:53:12,579 INFO L93 Difference]: Finished difference Result 8124 states and 15411 transitions. [2020-10-12 11:53:12,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:53:12,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1687 [2020-10-12 11:53:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:53:12,646 INFO L225 Difference]: With dead ends: 8124 [2020-10-12 11:53:12,646 INFO L226 Difference]: Without dead ends: 5834 [2020-10-12 11:53:12,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:53:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2020-10-12 11:53:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5801. [2020-10-12 11:53:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-10-12 11:53:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9374 transitions. [2020-10-12 11:53:12,994 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9374 transitions. Word has length 1687 [2020-10-12 11:53:12,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:53:13,000 INFO L479 AbstractCegarLoop]: Abstraction has 5801 states and 9374 transitions. [2020-10-12 11:53:13,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:53:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9374 transitions. [2020-10-12 11:53:13,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1697 [2020-10-12 11:53:13,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:53:13,150 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:53:13,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:53:13,151 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:53:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:53:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1792438683, now seen corresponding path program 1 times [2020-10-12 11:53:13,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:53:13,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356780497] [2020-10-12 11:53:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:53:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:18,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:18,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-12 11:53:18,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:53:18,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 11:53:18,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:53:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 11:53:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1700 [2020-10-12 11:53:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 11:53:19,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:53:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:19,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:19,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:19,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:53:19,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:53:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:53:19,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:53:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:53:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:53:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:53:19,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:53:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:19,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:19,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:19,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:53:19,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:53:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:53:19,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:53:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:53:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 11:53:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:53:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:53:22,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356780497] [2020-10-12 11:53:22,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:53:22,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:53:22,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308886498] [2020-10-12 11:53:22,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:53:22,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:53:22,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:53:22,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:53:22,933 INFO L87 Difference]: Start difference. First operand 5801 states and 9374 transitions. Second operand 6 states. [2020-10-12 11:53:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:53:50,925 INFO L93 Difference]: Finished difference Result 22189 states and 36830 transitions. [2020-10-12 11:53:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:53:50,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1696 [2020-10-12 11:53:50,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:53:51,010 INFO L225 Difference]: With dead ends: 22189 [2020-10-12 11:53:51,011 INFO L226 Difference]: Without dead ends: 16394 [2020-10-12 11:53:51,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:53:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16394 states. [2020-10-12 11:53:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16394 to 16341. [2020-10-12 11:53:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16341 states. [2020-10-12 11:53:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16341 states to 16341 states and 24103 transitions. [2020-10-12 11:53:51,491 INFO L78 Accepts]: Start accepts. Automaton has 16341 states and 24103 transitions. Word has length 1696 [2020-10-12 11:53:51,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:53:51,494 INFO L479 AbstractCegarLoop]: Abstraction has 16341 states and 24103 transitions. [2020-10-12 11:53:51,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:53:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 16341 states and 24103 transitions. [2020-10-12 11:53:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1765 [2020-10-12 11:53:51,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:53:51,577 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:53:51,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:53:51,577 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:53:51,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:53:51,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2001570150, now seen corresponding path program 1 times [2020-10-12 11:53:51,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:53:51,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600382181] [2020-10-12 11:53:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:53:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:53,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:57,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:57,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1788 [2020-10-12 11:53:57,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:53:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5266 [2020-10-12 11:53:57,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:53:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 11:53:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1700 [2020-10-12 11:53:57,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:53:59,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:53:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:59,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:59,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:53:59,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:53:59,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:53:59,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:53:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:53:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:53:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:53:59,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:53:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:59,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:59,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 11:53:59,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:53:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 11:53:59,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:53:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:53:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 11:53:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:54:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:54:02,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600382181] [2020-10-12 11:54:02,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:54:02,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:54:02,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720032475] [2020-10-12 11:54:02,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:54:02,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:54:02,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:54:02,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:54:02,034 INFO L87 Difference]: Start difference. First operand 16341 states and 24103 transitions. Second operand 5 states. [2020-10-12 11:54:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:54:24,940 INFO L93 Difference]: Finished difference Result 48575 states and 73505 transitions. [2020-10-12 11:54:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:54:24,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1764 [2020-10-12 11:54:24,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:54:25,097 INFO L225 Difference]: With dead ends: 48575 [2020-10-12 11:54:25,097 INFO L226 Difference]: Without dead ends: 32240 [2020-10-12 11:54:25,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:54:25,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32240 states. [2020-10-12 11:54:25,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32240 to 32167. [2020-10-12 11:54:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32167 states. [2020-10-12 11:54:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32167 states to 32167 states and 44242 transitions. [2020-10-12 11:54:25,914 INFO L78 Accepts]: Start accepts. Automaton has 32167 states and 44242 transitions. Word has length 1764 [2020-10-12 11:54:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:54:25,918 INFO L479 AbstractCegarLoop]: Abstraction has 32167 states and 44242 transitions. [2020-10-12 11:54:25,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:54:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 32167 states and 44242 transitions. [2020-10-12 11:54:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1773 [2020-10-12 11:54:26,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:54:26,058 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:54:26,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:54:26,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:54:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:54:26,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1182063028, now seen corresponding path program 1 times [2020-10-12 11:54:26,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:54:26,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083936204] [2020-10-12 11:54:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:54:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:26,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:31,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:31,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1796 [2020-10-12 11:54:31,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:54:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-12 11:54:31,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:31,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:54:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:54:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 11:54:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:54:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:54:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:32,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:32,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:54:32,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:54:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:54:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:54:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:54:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:54:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:54:32,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:54:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:32,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:32,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 11:54:32,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:54:32,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-12 11:54:32,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:54:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:54:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 11:54:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:54:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:54:35,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083936204] [2020-10-12 11:54:35,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:54:35,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 11:54:35,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326281435] [2020-10-12 11:54:35,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:54:35,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:54:35,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:54:35,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:54:35,411 INFO L87 Difference]: Start difference. First operand 32167 states and 44242 transitions. Second operand 7 states. [2020-10-12 11:54:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:54:59,454 INFO L93 Difference]: Finished difference Result 94424 states and 135022 transitions. [2020-10-12 11:54:59,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:54:59,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1772 [2020-10-12 11:54:59,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:54:59,698 INFO L225 Difference]: With dead ends: 94424 [2020-10-12 11:54:59,699 INFO L226 Difference]: Without dead ends: 62263 [2020-10-12 11:54:59,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:54:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62263 states. [2020-10-12 11:55:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62263 to 62251. [2020-10-12 11:55:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62251 states. [2020-10-12 11:55:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62251 states to 62251 states and 85605 transitions. [2020-10-12 11:55:00,951 INFO L78 Accepts]: Start accepts. Automaton has 62251 states and 85605 transitions. Word has length 1772 [2020-10-12 11:55:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:55:00,952 INFO L479 AbstractCegarLoop]: Abstraction has 62251 states and 85605 transitions. [2020-10-12 11:55:00,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:55:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 62251 states and 85605 transitions. [2020-10-12 11:55:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1819 [2020-10-12 11:55:01,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:55:01,086 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:55:01,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:55:01,087 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:55:01,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:55:01,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1246041082, now seen corresponding path program 1 times [2020-10-12 11:55:01,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:55:01,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882037490] [2020-10-12 11:55:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:55:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:06,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:06,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1844 [2020-10-12 11:55:06,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:55:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-12 11:55:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 11:55:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-12 11:55:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 773 [2020-10-12 11:55:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:08,743 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-10-12 11:55:08,906 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 33 [2020-10-12 11:55:09,076 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 31 [2020-10-12 11:55:09,227 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 29 [2020-10-12 11:55:09,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:55:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:09,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:09,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:55:09,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:55:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:55:09,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:55:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:55:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:55:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:09,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:55:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:09,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:09,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 11:55:09,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:55:09,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:55:09,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:55:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:55:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:55:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:09,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 11:55:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:09,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:09,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 11:55:09,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:55:09,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 11:55:09,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 11:55:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:55:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 11:55:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 11:55:20,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882037490] [2020-10-12 11:55:20,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:55:20,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 11:55:20,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740748581] [2020-10-12 11:55:20,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 11:55:20,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:55:20,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 11:55:20,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:55:20,611 INFO L87 Difference]: Start difference. First operand 62251 states and 85605 transitions. Second operand 20 states. [2020-10-12 11:55:33,890 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 75