/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem13_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:01:20,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:01:20,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:01:20,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:01:20,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:01:20,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:01:20,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:01:20,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:01:20,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:01:20,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:01:20,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:01:20,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:01:20,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:01:20,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:01:20,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:01:20,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:01:20,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:01:20,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:01:20,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:01:20,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:01:20,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:01:20,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:01:20,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:01:20,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:01:20,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:01:20,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:01:20,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:01:20,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:01:20,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:01:20,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:01:20,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:01:20,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:01:20,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:01:20,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:01:20,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:01:20,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:01:20,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:01:20,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:01:20,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:01:20,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:01:20,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:01:20,850 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 [2020-10-14 03:01:20,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:01:20,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:01:20,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:01:20,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:01:20,880 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:01:20,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:01:20,880 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:01:20,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:01:20,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:01:20,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:01:20,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:01:20,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:01:20,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:01:20,882 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:01:20,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:01:20,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:01:20,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:01:20,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:01:20,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:01:20,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:01:20,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:01:20,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:01:20,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:01:20,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:01:20,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:01:20,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:01:20,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:01:20,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:01:20,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:01:20,885 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:01:21,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:01:21,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:01:21,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:01:21,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:01:21,266 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:01:21,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17.c [2020-10-14 03:01:21,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cbc4b3ae/7d0fb50b30d24c86a4fe2625dff18790/FLAG97c12e639 [2020-10-14 03:01:22,174 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:01:22,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label17.c [2020-10-14 03:01:22,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cbc4b3ae/7d0fb50b30d24c86a4fe2625dff18790/FLAG97c12e639 [2020-10-14 03:01:22,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cbc4b3ae/7d0fb50b30d24c86a4fe2625dff18790 [2020-10-14 03:01:22,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:01:22,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:01:22,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:01:22,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:01:22,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:01:22,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:01:22" (1/1) ... [2020-10-14 03:01:22,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191ab6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:22, skipping insertion in model container [2020-10-14 03:01:22,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:01:22" (1/1) ... [2020-10-14 03:01:22,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:01:22,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:01:24,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:01:24,958 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:01:25,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:01:25,755 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:01:25,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25 WrapperNode [2020-10-14 03:01:25,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:01:25,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:01:25,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:01:25,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:01:25,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25" (1/1) ... [2020-10-14 03:01:25,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25" (1/1) ... [2020-10-14 03:01:25,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25" (1/1) ... [2020-10-14 03:01:25,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25" (1/1) ... [2020-10-14 03:01:25,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25" (1/1) ... [2020-10-14 03:01:26,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25" (1/1) ... [2020-10-14 03:01:26,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25" (1/1) ... [2020-10-14 03:01:26,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:01:26,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:01:26,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:01:26,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:01:26,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25" (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 [2020-10-14 03:01:26,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:01:26,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:01:26,210 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:01:26,210 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:01:26,210 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:01:26,210 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:01:26,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:01:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:01:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:01:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:01:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:01:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:01:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:01:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:01:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:01:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:01:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:01:37,852 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:01:37,852 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:01:37,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:01:37 BoogieIcfgContainer [2020-10-14 03:01:37,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:01:37,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:01:37,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:01:37,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:01:37,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:01:22" (1/3) ... [2020-10-14 03:01:37,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3225c5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:01:37, skipping insertion in model container [2020-10-14 03:01:37,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:25" (2/3) ... [2020-10-14 03:01:37,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3225c5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:01:37, skipping insertion in model container [2020-10-14 03:01:37,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:01:37" (3/3) ... [2020-10-14 03:01:37,880 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label17.c [2020-10-14 03:01:37,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:01:37,902 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:01:37,918 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:01:37,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:01:37,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:01:37,953 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:01:37,953 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:01:37,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:01:37,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:01:37,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:01:37,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:01:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:01:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 03:01:38,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:01:38,005 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] [2020-10-14 03:01:38,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:01:38,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:01:38,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1992287976, now seen corresponding path program 1 times [2020-10-14 03:01:38,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:01:38,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192539104] [2020-10-14 03:01:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:01:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:38,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:38,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 03:01:38,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:38,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-14 03:01:38,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:38,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:01:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:01:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 03:01:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:01:38,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:01:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:38,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:38,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:01:38,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:38,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:01:38,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:38,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:01:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:01:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:01:38,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192539104] [2020-10-14 03:01:38,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:01:38,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:01:38,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160109489] [2020-10-14 03:01:38,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:01:38,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:01:38,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:01:38,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:01:38,801 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 03:01:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:01:58,538 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-14 03:01:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:01:58,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 03:01:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:01:58,576 INFO L225 Difference]: With dead ends: 3230 [2020-10-14 03:01:58,576 INFO L226 Difference]: Without dead ends: 2026 [2020-10-14 03:01:58,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:01:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-14 03:01:58,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-14 03:01:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-14 03:01:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-14 03:01:58,791 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 39 [2020-10-14 03:01:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:01:58,793 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-14 03:01:58,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:01:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-14 03:01:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 03:01:58,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:01:58,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:01:58,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:01:58,805 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:01:58,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:01:58,807 INFO L82 PathProgramCache]: Analyzing trace with hash 77433821, now seen corresponding path program 1 times [2020-10-14 03:01:58,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:01:58,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500060209] [2020-10-14 03:01:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:01:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:01,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:01,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:02:01,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:02:01,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2248 [2020-10-14 03:02:01,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:01,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:02:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:02:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 03:02:01,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 03:02:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:01,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:01,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:01,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:02:01,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:01,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:02:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:02:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:01,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:01,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:01,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:02:01,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 03:02:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:01,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:02:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:01,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500060209] [2020-10-14 03:02:01,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:02:01,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:02:01,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258231165] [2020-10-14 03:02:01,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:02:01,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:01,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:02:01,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:02:01,453 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 5 states. [2020-10-14 03:02:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:18,642 INFO L93 Difference]: Finished difference Result 5709 states and 9479 transitions. [2020-10-14 03:02:18,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:02:18,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 03:02:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:18,665 INFO L225 Difference]: With dead ends: 5709 [2020-10-14 03:02:18,665 INFO L226 Difference]: Without dead ends: 3706 [2020-10-14 03:02:18,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:02:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2020-10-14 03:02:18,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3672. [2020-10-14 03:02:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-10-14 03:02:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5312 transitions. [2020-10-14 03:02:18,769 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5312 transitions. Word has length 114 [2020-10-14 03:02:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:18,770 INFO L479 AbstractCegarLoop]: Abstraction has 3672 states and 5312 transitions. [2020-10-14 03:02:18,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:02:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5312 transitions. [2020-10-14 03:02:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 03:02:18,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:18,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:02:18,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:02:18,774 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:18,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:18,775 INFO L82 PathProgramCache]: Analyzing trace with hash 15253471, now seen corresponding path program 1 times [2020-10-14 03:02:18,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:18,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157767831] [2020-10-14 03:02:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:18,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:19,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:20,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:20,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 03:02:20,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:02:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1423 [2020-10-14 03:02:20,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:20,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:02:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:02:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:20,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:20,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:20,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:20,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:20,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:02:20,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:20,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:02:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:02:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:20,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:20,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:20,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:02:20,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:20,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:02:20,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:20,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 03:02:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:02:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:20,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157767831] [2020-10-14 03:02:20,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:02:20,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:02:20,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593912525] [2020-10-14 03:02:20,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:02:20,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:20,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:02:20,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:02:20,487 INFO L87 Difference]: Start difference. First operand 3672 states and 5312 transitions. Second operand 5 states. [2020-10-14 03:02:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:40,701 INFO L93 Difference]: Finished difference Result 10740 states and 15798 transitions. [2020-10-14 03:02:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:02:40,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 03:02:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:40,746 INFO L225 Difference]: With dead ends: 10740 [2020-10-14 03:02:40,746 INFO L226 Difference]: Without dead ends: 7074 [2020-10-14 03:02:40,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:02:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7074 states. [2020-10-14 03:02:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7074 to 6999. [2020-10-14 03:02:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6999 states. [2020-10-14 03:02:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 9886 transitions. [2020-10-14 03:02:40,989 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 9886 transitions. Word has length 121 [2020-10-14 03:02:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:40,991 INFO L479 AbstractCegarLoop]: Abstraction has 6999 states and 9886 transitions. [2020-10-14 03:02:40,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:02:40,992 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 9886 transitions. [2020-10-14 03:02:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 03:02:41,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:41,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:02:41,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:02:41,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:41,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1014105827, now seen corresponding path program 1 times [2020-10-14 03:02:41,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:41,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480441081] [2020-10-14 03:02:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:41,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:42,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:42,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 03:02:42,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:02:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1688 [2020-10-14 03:02:42,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:42,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:02:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 03:02:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 03:02:42,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:42,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:42,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:42,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:42,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:02:42,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:42,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:02:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:02:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:42,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:42,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:42,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:42,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:02:42,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:42,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 03:02:42,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:42,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:42,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:42,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:02:42,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:43,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480441081] [2020-10-14 03:02:43,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:02:43,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:02:43,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329598790] [2020-10-14 03:02:43,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:02:43,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:43,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:02:43,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:02:43,028 INFO L87 Difference]: Start difference. First operand 6999 states and 9886 transitions. Second operand 6 states. [2020-10-14 03:03:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:03,806 INFO L93 Difference]: Finished difference Result 18085 states and 26484 transitions. [2020-10-14 03:03:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:03,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-14 03:03:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:03,863 INFO L225 Difference]: With dead ends: 18085 [2020-10-14 03:03:03,864 INFO L226 Difference]: Without dead ends: 11092 [2020-10-14 03:03:03,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:03:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11092 states. [2020-10-14 03:03:04,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11092 to 11075. [2020-10-14 03:03:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11075 states. [2020-10-14 03:03:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11075 states to 11075 states and 16156 transitions. [2020-10-14 03:03:04,147 INFO L78 Accepts]: Start accepts. Automaton has 11075 states and 16156 transitions. Word has length 121 [2020-10-14 03:03:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:04,148 INFO L479 AbstractCegarLoop]: Abstraction has 11075 states and 16156 transitions. [2020-10-14 03:03:04,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:03:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 11075 states and 16156 transitions. [2020-10-14 03:03:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 03:03:04,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:04,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:03:04,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:03:04,153 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:04,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:04,153 INFO L82 PathProgramCache]: Analyzing trace with hash 421047581, now seen corresponding path program 1 times [2020-10-14 03:03:04,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:04,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823920953] [2020-10-14 03:03:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:05,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:05,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 03:03:05,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:03:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 972 [2020-10-14 03:03:05,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:05,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-14 03:03:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 03:03:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:05,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:05,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:05,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:03:05,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:05,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:05,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:03:05,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:05,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:05,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:03:05,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:05,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:03:05,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:05,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 03:03:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:05,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823920953] [2020-10-14 03:03:05,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:05,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:03:05,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929235963] [2020-10-14 03:03:05,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:03:05,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:05,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:03:05,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:05,536 INFO L87 Difference]: Start difference. First operand 11075 states and 16156 transitions. Second operand 5 states. [2020-10-14 03:03:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:29,183 INFO L93 Difference]: Finished difference Result 31923 states and 47978 transitions. [2020-10-14 03:03:29,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:29,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 03:03:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:29,275 INFO L225 Difference]: With dead ends: 31923 [2020-10-14 03:03:29,276 INFO L226 Difference]: Without dead ends: 20854 [2020-10-14 03:03:29,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:03:29,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20854 states. [2020-10-14 03:03:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20854 to 20850. [2020-10-14 03:03:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20850 states. [2020-10-14 03:03:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20850 states to 20850 states and 29365 transitions. [2020-10-14 03:03:29,808 INFO L78 Accepts]: Start accepts. Automaton has 20850 states and 29365 transitions. Word has length 146 [2020-10-14 03:03:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:29,809 INFO L479 AbstractCegarLoop]: Abstraction has 20850 states and 29365 transitions. [2020-10-14 03:03:29,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:03:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 20850 states and 29365 transitions. [2020-10-14 03:03:29,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 03:03:29,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:29,820 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:03:29,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:03:29,820 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:29,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:29,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1403573132, now seen corresponding path program 1 times [2020-10-14 03:03:29,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:29,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578715408] [2020-10-14 03:03:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:29,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:34,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:34,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 03:03:34,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:03:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 03:03:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:34,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:03:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:03:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:34,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:34,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:34,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:03:34,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:34,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:34,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:35,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:35,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 03:03:35,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 03:03:35,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:35,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:03:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 03:03:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:35,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:35,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:35,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:03:35,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 03:03:35,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:35,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:03:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:03:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:03:35,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578715408] [2020-10-14 03:03:35,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:35,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:03:35,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225594883] [2020-10-14 03:03:35,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:03:35,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:35,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:03:35,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:03:35,468 INFO L87 Difference]: Start difference. First operand 20850 states and 29365 transitions. Second operand 7 states. [2020-10-14 03:03:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:59,673 INFO L93 Difference]: Finished difference Result 49055 states and 77543 transitions. [2020-10-14 03:03:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:03:59,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-14 03:03:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:59,844 INFO L225 Difference]: With dead ends: 49055 [2020-10-14 03:03:59,845 INFO L226 Difference]: Without dead ends: 28211 [2020-10-14 03:03:59,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:03:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28211 states. [2020-10-14 03:04:00,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28211 to 27827. [2020-10-14 03:04:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27827 states. [2020-10-14 03:04:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27827 states to 27827 states and 39723 transitions. [2020-10-14 03:04:00,854 INFO L78 Accepts]: Start accepts. Automaton has 27827 states and 39723 transitions. Word has length 204 [2020-10-14 03:04:00,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:00,855 INFO L479 AbstractCegarLoop]: Abstraction has 27827 states and 39723 transitions. [2020-10-14 03:04:00,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:04:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand 27827 states and 39723 transitions. [2020-10-14 03:04:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 03:04:00,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:00,864 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:04:00,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:04:00,864 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:00,865 INFO L82 PathProgramCache]: Analyzing trace with hash -132984160, now seen corresponding path program 1 times [2020-10-14 03:04:00,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:00,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474496137] [2020-10-14 03:04:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:02,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:05,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:05,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 03:04:05,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:04:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4894 [2020-10-14 03:04:05,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:05,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:04:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 03:04:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:05,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:05,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:05,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:04:05,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:05,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:05,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:06,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:06,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:04:06,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:06,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 03:04:06,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:06,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:06,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:04:06,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:04:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:06,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:06,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:04:06,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:06,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 03:04:06,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:06,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:04:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 03:04:06,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:04:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:04:06,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474496137] [2020-10-14 03:04:06,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:06,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:04:06,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937418082] [2020-10-14 03:04:06,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:04:06,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:06,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:04:06,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:04:06,700 INFO L87 Difference]: Start difference. First operand 27827 states and 39723 transitions. Second operand 7 states. [2020-10-14 03:04:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:37,341 INFO L93 Difference]: Finished difference Result 69955 states and 108044 transitions. [2020-10-14 03:04:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:04:37,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-14 03:04:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:37,511 INFO L225 Difference]: With dead ends: 69955 [2020-10-14 03:04:37,512 INFO L226 Difference]: Without dead ends: 42134 [2020-10-14 03:04:37,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:04:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42134 states. [2020-10-14 03:04:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42134 to 42009. [2020-10-14 03:04:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42009 states. [2020-10-14 03:04:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42009 states to 42009 states and 61703 transitions. [2020-10-14 03:04:39,700 INFO L78 Accepts]: Start accepts. Automaton has 42009 states and 61703 transitions. Word has length 209 [2020-10-14 03:04:39,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:39,700 INFO L479 AbstractCegarLoop]: Abstraction has 42009 states and 61703 transitions. [2020-10-14 03:04:39,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:04:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 42009 states and 61703 transitions. [2020-10-14 03:04:39,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 03:04:39,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:39,713 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:04:39,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:04:39,714 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:39,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1578751656, now seen corresponding path program 1 times [2020-10-14 03:04:39,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:39,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659133525] [2020-10-14 03:04:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 03:04:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:04:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4497 [2020-10-14 03:04:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:44,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 03:04:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:04:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:04:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:44,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:44,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:44,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:44,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:04:44,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:44,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:44,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:44,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:44,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:44,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:44,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:44,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:44,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 03:04:44,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 03:04:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:44,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:04:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:44,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 03:04:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:44,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:44,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:04:44,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 03:04:44,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:44,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:44,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:44,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:04:44,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:04:44,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:04:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:04:44,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659133525] [2020-10-14 03:04:44,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:44,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:04:44,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625573565] [2020-10-14 03:04:44,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:04:44,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:04:44,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:04:44,991 INFO L87 Difference]: Start difference. First operand 42009 states and 61703 transitions. Second operand 7 states.