/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:22:21,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:22:21,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:22:21,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:22:21,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:22:21,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:22:21,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:22:21,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:22:21,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:22:21,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:22:21,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:22:21,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:22:21,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:22:21,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:22:21,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:22:21,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:22:21,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:22:21,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:22:21,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:22:21,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:22:21,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:22:21,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:22:21,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:22:21,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:22:21,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:22:21,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:22:21,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:22:21,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:22:21,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:22:21,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:22:21,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:22:21,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:22:21,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:22:21,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:22:21,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:22:21,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:22:21,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:22:21,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:22:21,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:22:21,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:22:21,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:22:21,901 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 21:22:21,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:22:21,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:22:21,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:22:21,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:22:21,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:22:21,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:22:21,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:22:21,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:22:21,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:22:21,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:22:21,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:22:21,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:22:21,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:22:21,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:22:21,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:22:21,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:22:21,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:22:21,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:22:21,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:22:21,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:22:21,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:22:21,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:22:21,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:22:21,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:22:21,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:22:21,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:22:21,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:22:21,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:22:21,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:22:21,954 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:22:22,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:22:22,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:22:22,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:22:22,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:22:22,276 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:22:22,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label06.c [2020-10-14 21:22:22,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1c39b82e/e540605456c44af8b2a89193cd71659f/FLAG9cd8057b2 [2020-10-14 21:22:23,221 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:22:23,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label06.c [2020-10-14 21:22:23,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1c39b82e/e540605456c44af8b2a89193cd71659f/FLAG9cd8057b2 [2020-10-14 21:22:23,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1c39b82e/e540605456c44af8b2a89193cd71659f [2020-10-14 21:22:23,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:22:23,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:22:23,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:22:23,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:22:23,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:22:23,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:23" (1/1) ... [2020-10-14 21:22:23,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:23, skipping insertion in model container [2020-10-14 21:22:23,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:23" (1/1) ... [2020-10-14 21:22:23,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:22:23,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:22:25,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:22:25,837 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:22:26,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:22:26,607 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:22:26,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26 WrapperNode [2020-10-14 21:22:26,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:22:26,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:22:26,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:22:26,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:22:26,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26" (1/1) ... [2020-10-14 21:22:26,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26" (1/1) ... [2020-10-14 21:22:26,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26" (1/1) ... [2020-10-14 21:22:26,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26" (1/1) ... [2020-10-14 21:22:26,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26" (1/1) ... [2020-10-14 21:22:26,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26" (1/1) ... [2020-10-14 21:22:26,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26" (1/1) ... [2020-10-14 21:22:27,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:22:27,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:22:27,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:22:27,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:22:27,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26" (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 21:22:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:22:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:22:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:22:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:22:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:22:27,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:22:27,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:22:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:22:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:22:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:22:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:22:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:22:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:22:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:22:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:22:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:22:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:22:38,987 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:22:38,987 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:22:39,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:39 BoogieIcfgContainer [2020-10-14 21:22:39,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:22:39,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:22:39,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:22:39,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:22:39,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:22:23" (1/3) ... [2020-10-14 21:22:39,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7eab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:39, skipping insertion in model container [2020-10-14 21:22:39,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:26" (2/3) ... [2020-10-14 21:22:39,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7eab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:39, skipping insertion in model container [2020-10-14 21:22:39,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:39" (3/3) ... [2020-10-14 21:22:39,014 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label06.c [2020-10-14 21:22:39,031 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:22:39,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:22:39,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:22:39,108 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:22:39,109 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:22:39,109 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:22:39,109 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:22:39,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:22:39,110 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:22:39,110 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:22:39,110 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:22:39,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:22:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 21:22:39,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:39,173 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] [2020-10-14 21:22:39,173 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:39,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1490203272, now seen corresponding path program 1 times [2020-10-14 21:22:39,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:39,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554640261] [2020-10-14 21:22:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:39,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:39,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 21:22:39,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:39,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-14 21:22:39,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:39,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:22:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 21:22:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:22:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:40,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:40,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:40,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:22:40,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:40,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:40,077 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 21:22:40,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554640261] [2020-10-14 21:22:40,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:22:40,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:22:40,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284493704] [2020-10-14 21:22:40,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:22:40,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:40,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:22:40,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:22:40,108 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:22:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:56,155 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 21:22:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:22:56,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-14 21:22:56,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:56,204 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 21:22:56,204 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 21:22:56,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:22:56,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 21:22:56,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 21:22:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 21:22:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 21:22:56,424 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 31 [2020-10-14 21:22:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:56,427 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 21:22:56,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:22:56,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 21:22:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 21:22:56,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:56,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:56,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:22:56,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:56,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:56,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1395677152, now seen corresponding path program 1 times [2020-10-14 21:22:56,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:56,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322976384] [2020-10-14 21:22:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:56,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:57,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:57,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:22:57,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:22:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-10-14 21:22:57,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:57,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:22:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:22:57,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:22:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:58,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:58,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:58,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:58,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:22:58,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:58,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:22:58,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:58,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:58,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:22:58,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 21:22:58,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:58,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:22:58,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:22:58,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322976384] [2020-10-14 21:22:58,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:22:58,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:22:58,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857910475] [2020-10-14 21:22:58,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:22:58,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:58,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:22:58,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:58,425 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 7 states. [2020-10-14 21:23:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:19,313 INFO L93 Difference]: Finished difference Result 5525 states and 9141 transitions. [2020-10-14 21:23:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:23:19,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-14 21:23:19,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:19,340 INFO L225 Difference]: With dead ends: 5525 [2020-10-14 21:23:19,340 INFO L226 Difference]: Without dead ends: 3646 [2020-10-14 21:23:19,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:23:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2020-10-14 21:23:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3579. [2020-10-14 21:23:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3579 states. [2020-10-14 21:23:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 5188 transitions. [2020-10-14 21:23:19,543 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 5188 transitions. Word has length 101 [2020-10-14 21:23:19,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:19,544 INFO L479 AbstractCegarLoop]: Abstraction has 3579 states and 5188 transitions. [2020-10-14 21:23:19,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:23:19,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 5188 transitions. [2020-10-14 21:23:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 21:23:19,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:19,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:19,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:23:19,552 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:19,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:19,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1252021255, now seen corresponding path program 1 times [2020-10-14 21:23:19,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:19,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031423307] [2020-10-14 21:23:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:20,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:20,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:23:20,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:23:20,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-14 21:23:20,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:20,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:23:20,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:20,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:20,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:20,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:20,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:23:20,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:20,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:23:20,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 21:23:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:20,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:23:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:20,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031423307] [2020-10-14 21:23:20,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:20,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:20,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122183122] [2020-10-14 21:23:20,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:20,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:20,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:20,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:20,710 INFO L87 Difference]: Start difference. First operand 3579 states and 5188 transitions. Second operand 7 states. [2020-10-14 21:23:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:43,241 INFO L93 Difference]: Finished difference Result 8246 states and 12228 transitions. [2020-10-14 21:23:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:23:43,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-14 21:23:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:43,273 INFO L225 Difference]: With dead ends: 8246 [2020-10-14 21:23:43,274 INFO L226 Difference]: Without dead ends: 4673 [2020-10-14 21:23:43,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:23:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2020-10-14 21:23:43,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 4502. [2020-10-14 21:23:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4502 states. [2020-10-14 21:23:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 5934 transitions. [2020-10-14 21:23:43,453 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 5934 transitions. Word has length 104 [2020-10-14 21:23:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:43,455 INFO L479 AbstractCegarLoop]: Abstraction has 4502 states and 5934 transitions. [2020-10-14 21:23:43,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:23:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 5934 transitions. [2020-10-14 21:23:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 21:23:43,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:43,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:43,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:23:43,467 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash 574099958, now seen corresponding path program 1 times [2020-10-14 21:23:43,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:43,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616524804] [2020-10-14 21:23:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:44,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:44,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 21:23:44,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:23:44,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-14 21:23:44,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:44,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:23:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:44,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:44,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:44,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:44,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:44,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:23:44,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:44,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:44,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:44,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:44,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:44,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:44,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:23:44,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 21:23:44,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:44,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:23:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:45,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616524804] [2020-10-14 21:23:45,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:45,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:45,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893623234] [2020-10-14 21:23:45,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:45,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:45,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:45,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:45,098 INFO L87 Difference]: Start difference. First operand 4502 states and 5934 transitions. Second operand 7 states. [2020-10-14 21:24:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:09,528 INFO L93 Difference]: Finished difference Result 12230 states and 16990 transitions. [2020-10-14 21:24:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:24:09,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-14 21:24:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:09,586 INFO L225 Difference]: With dead ends: 12230 [2020-10-14 21:24:09,586 INFO L226 Difference]: Without dead ends: 8538 [2020-10-14 21:24:09,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:24:09,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2020-10-14 21:24:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 8326. [2020-10-14 21:24:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8326 states. [2020-10-14 21:24:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8326 states to 8326 states and 10839 transitions. [2020-10-14 21:24:09,859 INFO L78 Accepts]: Start accepts. Automaton has 8326 states and 10839 transitions. Word has length 121 [2020-10-14 21:24:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:09,860 INFO L479 AbstractCegarLoop]: Abstraction has 8326 states and 10839 transitions. [2020-10-14 21:24:09,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:24:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8326 states and 10839 transitions. [2020-10-14 21:24:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 21:24:09,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:09,863 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:24:09,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:24:09,864 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:09,864 INFO L82 PathProgramCache]: Analyzing trace with hash -896966092, now seen corresponding path program 1 times [2020-10-14 21:24:09,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:09,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665388027] [2020-10-14 21:24:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:11,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:14,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:14,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 21:24:14,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:24:14,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4654 [2020-10-14 21:24:14,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:14,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:24:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:24:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 21:24:14,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:24:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:14,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:14,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:14,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:14,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:24:14,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:14,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:24:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:14,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:14,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:14,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:24:14,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 21:24:14,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:14,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:24:14,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:24:15,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:24:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:15,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:15,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:24:15,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 21:24:15,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:15,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:15,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:24:15,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 21:24:15,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665388027] [2020-10-14 21:24:15,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:24:15,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:24:15,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197813516] [2020-10-14 21:24:15,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:24:15,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:15,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:24:15,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:24:15,488 INFO L87 Difference]: Start difference. First operand 8326 states and 10839 transitions. Second operand 7 states. [2020-10-14 21:24:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:49,366 INFO L93 Difference]: Finished difference Result 23755 states and 32941 transitions. [2020-10-14 21:24:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:24:49,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-10-14 21:24:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:49,470 INFO L225 Difference]: With dead ends: 23755 [2020-10-14 21:24:49,471 INFO L226 Difference]: Without dead ends: 16238 [2020-10-14 21:24:49,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:24:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16238 states. [2020-10-14 21:24:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16238 to 15727. [2020-10-14 21:24:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15727 states. [2020-10-14 21:24:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15727 states to 15727 states and 19928 transitions. [2020-10-14 21:24:50,020 INFO L78 Accepts]: Start accepts. Automaton has 15727 states and 19928 transitions. Word has length 199 [2020-10-14 21:24:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:50,021 INFO L479 AbstractCegarLoop]: Abstraction has 15727 states and 19928 transitions. [2020-10-14 21:24:50,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:24:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 15727 states and 19928 transitions. [2020-10-14 21:24:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 21:24:50,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:50,027 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:24:50,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:24:50,028 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:50,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1278204044, now seen corresponding path program 1 times [2020-10-14 21:24:50,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:50,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221186673] [2020-10-14 21:24:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:50,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:55,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:55,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 21:24:55,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:24:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 21:24:55,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:55,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:24:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:24:55,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:55,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:55,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:55,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:55,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:55,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:24:55,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:55,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:24:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:24:55,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:55,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:55,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:55,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:24:55,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:55,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 21:24:55,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:55,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:24:55,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:55,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:24:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:55,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:55,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:24:55,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:55,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 21:24:55,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:55,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:24:55,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:24:55,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221186673] [2020-10-14 21:24:55,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:24:55,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:24:55,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625387653] [2020-10-14 21:24:55,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:24:55,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:55,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:24:55,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:24:55,885 INFO L87 Difference]: Start difference. First operand 15727 states and 19928 transitions. Second operand 7 states. [2020-10-14 21:25:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:25:23,082 INFO L93 Difference]: Finished difference Result 45260 states and 62014 transitions. [2020-10-14 21:25:23,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:25:23,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-14 21:25:23,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:25:23,216 INFO L225 Difference]: With dead ends: 45260 [2020-10-14 21:25:23,216 INFO L226 Difference]: Without dead ends: 30342 [2020-10-14 21:25:23,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:25:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30342 states. [2020-10-14 21:25:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30342 to 29614. [2020-10-14 21:25:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29614 states. [2020-10-14 21:25:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29614 states to 29614 states and 39422 transitions. [2020-10-14 21:25:24,060 INFO L78 Accepts]: Start accepts. Automaton has 29614 states and 39422 transitions. Word has length 231 [2020-10-14 21:25:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:25:24,062 INFO L479 AbstractCegarLoop]: Abstraction has 29614 states and 39422 transitions. [2020-10-14 21:25:24,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:25:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 29614 states and 39422 transitions. [2020-10-14 21:25:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-14 21:25:24,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:24,068 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:25:24,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:25:24,069 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:24,070 INFO L82 PathProgramCache]: Analyzing trace with hash 679992297, now seen corresponding path program 1 times [2020-10-14 21:25:24,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:24,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259487716] [2020-10-14 21:25:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:25,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:26,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:26,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 21:25:26,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:25:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2466 [2020-10-14 21:25:26,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:26,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:25:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:25:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-14 21:25:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:26,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:26,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:26,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:26,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:26,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:25:26,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:26,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:25:26,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:26,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:25:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:27,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:25:27,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 21:25:27,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:27,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:27,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:25:27,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:25:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:27,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:25:27,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 21:25:27,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:27,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:25:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 21:25:27,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259487716] [2020-10-14 21:25:27,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:25:27,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:25:27,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206876874] [2020-10-14 21:25:27,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:25:27,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:27,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:25:27,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:25:27,915 INFO L87 Difference]: Start difference. First operand 29614 states and 39422 transitions. Second operand 7 states. [2020-10-14 21:26:15,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:15,193 INFO L93 Difference]: Finished difference Result 95110 states and 132203 transitions. [2020-10-14 21:26:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:26:15,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-14 21:26:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:15,431 INFO L225 Difference]: With dead ends: 95110 [2020-10-14 21:26:15,431 INFO L226 Difference]: Without dead ends: 66305 [2020-10-14 21:26:15,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:26:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66305 states. [2020-10-14 21:26:16,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66305 to 50066. [2020-10-14 21:26:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50066 states. [2020-10-14 21:26:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50066 states to 50066 states and 69823 transitions. [2020-10-14 21:26:17,158 INFO L78 Accepts]: Start accepts. Automaton has 50066 states and 69823 transitions. Word has length 253 [2020-10-14 21:26:17,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:17,159 INFO L479 AbstractCegarLoop]: Abstraction has 50066 states and 69823 transitions. [2020-10-14 21:26:17,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:26:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 50066 states and 69823 transitions. [2020-10-14 21:26:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-14 21:26:17,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:17,168 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:26:17,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:26:17,168 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:17,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1454643317, now seen corresponding path program 1 times [2020-10-14 21:26:17,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:17,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872791198] [2020-10-14 21:26:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:17,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking...