/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/Problem19_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:06:37,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:06:37,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:06:37,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:06:37,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:06:37,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:06:37,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:06:37,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:06:37,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:06:37,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:06:37,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:06:37,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:06:37,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:06:37,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:06:37,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:06:37,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:06:37,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:06:37,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:06:37,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:06:37,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:06:37,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:06:37,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:06:37,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:06:37,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:06:37,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:06:37,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:06:37,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:06:37,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:06:37,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:06:37,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:06:37,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:06:37,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:06:37,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:06:37,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:06:37,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:06:37,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:06:37,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:06:37,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:06:37,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:06:37,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:06:37,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:06:37,956 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 23:06:37,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:06:37,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:06:37,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:06:37,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:06:37,998 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:06:37,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:06:37,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:06:37,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:06:37,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:06:37,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:06:38,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:06:38,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:06:38,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:06:38,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:06:38,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:06:38,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:06:38,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:06:38,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:06:38,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:06:38,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:06:38,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:06:38,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:06:38,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:06:38,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:06:38,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:06:38,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:06:38,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:06:38,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:06:38,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:06:38,004 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 23:06:38,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:06:38,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:06:38,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:06:38,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:06:38,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:06:38,394 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label41.c [2020-10-14 23:06:38,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b26a15eda/fd72a45f88de4d029559034796f4da0a/FLAG62ea6926c [2020-10-14 23:06:39,537 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:06:39,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label41.c [2020-10-14 23:06:39,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b26a15eda/fd72a45f88de4d029559034796f4da0a/FLAG62ea6926c [2020-10-14 23:06:39,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b26a15eda/fd72a45f88de4d029559034796f4da0a [2020-10-14 23:06:39,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:06:39,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:06:39,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:06:39,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:06:39,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:06:39,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:06:39" (1/1) ... [2020-10-14 23:06:39,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25814f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:39, skipping insertion in model container [2020-10-14 23:06:39,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:06:39" (1/1) ... [2020-10-14 23:06:39,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:06:40,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:06:42,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:06:42,416 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:06:43,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:06:43,865 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:06:43,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43 WrapperNode [2020-10-14 23:06:43,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:06:43,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:06:43,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:06:43,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:06:43,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43" (1/1) ... [2020-10-14 23:06:43,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43" (1/1) ... [2020-10-14 23:06:43,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43" (1/1) ... [2020-10-14 23:06:43,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43" (1/1) ... [2020-10-14 23:06:44,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43" (1/1) ... [2020-10-14 23:06:44,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43" (1/1) ... [2020-10-14 23:06:44,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43" (1/1) ... [2020-10-14 23:06:44,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:06:44,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:06:44,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:06:44,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:06:44,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43" (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 23:06:44,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:06:44,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:06:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:06:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:06:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:06:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:06:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:06:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:06:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:06:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:06:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:06:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:06:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:06:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:06:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:06:44,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:06:44,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:06:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:06:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:06:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:06:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:06:56,952 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:06:56,953 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:06:56,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:06:56 BoogieIcfgContainer [2020-10-14 23:06:56,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:06:56,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:06:56,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:06:56,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:06:56,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:06:39" (1/3) ... [2020-10-14 23:06:56,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d186ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:06:56, skipping insertion in model container [2020-10-14 23:06:56,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:06:43" (2/3) ... [2020-10-14 23:06:56,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d186ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:06:56, skipping insertion in model container [2020-10-14 23:06:56,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:06:56" (3/3) ... [2020-10-14 23:06:56,979 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label41.c [2020-10-14 23:06:56,991 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:06:57,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:06:57,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:06:57,049 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:06:57,049 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:06:57,049 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:06:57,049 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:06:57,050 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:06:57,050 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:06:57,050 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:06:57,050 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:06:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:06:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 23:06:57,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:06:57,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:06:57,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:06:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:06:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash 685512794, now seen corresponding path program 1 times [2020-10-14 23:06:57,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:06:57,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026387725] [2020-10-14 23:06:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:06:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:57,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:57,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:06:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 23:06:57,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:57,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:06:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:06:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:06:57,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:06:57,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:06:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:57,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:57,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:57,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:06:57,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:57,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:06:57,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:57,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:06:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:06:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:06:57,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:57,724 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 23:06:57,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026387725] [2020-10-14 23:06:57,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:06:57,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:06:57,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136334970] [2020-10-14 23:06:57,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:06:57,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:06:57,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:06:57,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:06:57,754 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:07:23,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:07:23,206 INFO L93 Difference]: Finished difference Result 5095 states and 9566 transitions. [2020-10-14 23:07:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:07:23,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 23:07:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:07:23,308 INFO L225 Difference]: With dead ends: 5095 [2020-10-14 23:07:23,308 INFO L226 Difference]: Without dead ends: 3254 [2020-10-14 23:07:23,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 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 23:07:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2020-10-14 23:07:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3208. [2020-10-14 23:07:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2020-10-14 23:07:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5177 transitions. [2020-10-14 23:07:23,567 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5177 transitions. Word has length 12 [2020-10-14 23:07:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:07:23,568 INFO L479 AbstractCegarLoop]: Abstraction has 3208 states and 5177 transitions. [2020-10-14 23:07:23,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:07:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5177 transitions. [2020-10-14 23:07:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 23:07:23,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:07:23,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:07:23,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:07:23,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:07:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:07:23,575 INFO L82 PathProgramCache]: Analyzing trace with hash -206282927, now seen corresponding path program 1 times [2020-10-14 23:07:23,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:07:23,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265428985] [2020-10-14 23:07:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:07:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:23,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:25,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:25,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 23:07:25,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:07:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-14 23:07:25,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:25,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:25,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:07:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:07:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 23:07:25,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:25,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:07:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:25,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:25,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:07:25,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:25,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:07:25,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:25,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:25,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:07:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:07:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:07:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:25,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:07:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:25,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:25,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:07:25,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 23:07:25,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:25,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:07:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:07:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:07:25,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:07:25,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265428985] [2020-10-14 23:07:25,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:07:25,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:07:25,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104402042] [2020-10-14 23:07:25,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:07:25,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:07:25,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:07:25,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:07:25,466 INFO L87 Difference]: Start difference. First operand 3208 states and 5177 transitions. Second operand 7 states. [2020-10-14 23:08:03,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:08:03,466 INFO L93 Difference]: Finished difference Result 9463 states and 15400 transitions. [2020-10-14 23:08:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:08:03,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-14 23:08:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:08:03,533 INFO L225 Difference]: With dead ends: 9463 [2020-10-14 23:08:03,533 INFO L226 Difference]: Without dead ends: 6261 [2020-10-14 23:08:03,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:08:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2020-10-14 23:08:03,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 6142. [2020-10-14 23:08:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6142 states. [2020-10-14 23:08:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8978 transitions. [2020-10-14 23:08:03,857 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8978 transitions. Word has length 87 [2020-10-14 23:08:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:08:03,858 INFO L479 AbstractCegarLoop]: Abstraction has 6142 states and 8978 transitions. [2020-10-14 23:08:03,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:08:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8978 transitions. [2020-10-14 23:08:03,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 23:08:03,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:08:03,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:08:03,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:08:03,880 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:08:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:08:03,880 INFO L82 PathProgramCache]: Analyzing trace with hash -650675793, now seen corresponding path program 1 times [2020-10-14 23:08:03,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:08:03,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142560611] [2020-10-14 23:08:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:08:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:05,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:05,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 23:08:05,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:08:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-10-14 23:08:05,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:05,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:08:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:08:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:08:05,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:08:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:05,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:05,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:08:05,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:08:05,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:05,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:08:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:08:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:08:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:05,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:08:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:05,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:05,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:08:05,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-14 23:08:05,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:05,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:08:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:08:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:08:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:08:05,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142560611] [2020-10-14 23:08:05,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:08:05,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:08:05,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352928289] [2020-10-14 23:08:05,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:08:05,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:08:05,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:08:05,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:08:05,990 INFO L87 Difference]: Start difference. First operand 6142 states and 8978 transitions. Second operand 7 states. [2020-10-14 23:08:53,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:08:53,296 INFO L93 Difference]: Finished difference Result 18783 states and 27958 transitions. [2020-10-14 23:08:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:08:53,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-14 23:08:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:08:53,374 INFO L225 Difference]: With dead ends: 18783 [2020-10-14 23:08:53,375 INFO L226 Difference]: Without dead ends: 12647 [2020-10-14 23:08:53,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:08:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12647 states. [2020-10-14 23:08:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12647 to 12336. [2020-10-14 23:08:53,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12336 states. [2020-10-14 23:08:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12336 states to 12336 states and 16401 transitions. [2020-10-14 23:08:53,831 INFO L78 Accepts]: Start accepts. Automaton has 12336 states and 16401 transitions. Word has length 113 [2020-10-14 23:08:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:08:53,831 INFO L479 AbstractCegarLoop]: Abstraction has 12336 states and 16401 transitions. [2020-10-14 23:08:53,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:08:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12336 states and 16401 transitions. [2020-10-14 23:08:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 23:08:53,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:08:53,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:08:53,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:08:53,835 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:08:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:08:53,835 INFO L82 PathProgramCache]: Analyzing trace with hash 246436739, now seen corresponding path program 1 times [2020-10-14 23:08:53,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:08:53,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750419624] [2020-10-14 23:08:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:08:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:54,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:54,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:55,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:55,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 23:08:55,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:08:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-14 23:08:55,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:55,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:08:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:08:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 23:08:55,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:08:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:55,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:55,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:08:55,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:08:55,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:55,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:08:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:08:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:08:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:55,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:08:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:55,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:55,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:55,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:55,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:08:55,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:08:55,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-14 23:08:55,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:55,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:08:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:08:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 23:08:55,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:08:56,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750419624] [2020-10-14 23:08:56,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:08:56,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:08:56,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044455522] [2020-10-14 23:08:56,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:08:56,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:08:56,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:08:56,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:08:56,016 INFO L87 Difference]: Start difference. First operand 12336 states and 16401 transitions. Second operand 7 states. [2020-10-14 23:10:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:10:09,275 INFO L93 Difference]: Finished difference Result 37827 states and 52291 transitions. [2020-10-14 23:10:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:10:09,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-14 23:10:09,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:10:09,450 INFO L225 Difference]: With dead ends: 37827 [2020-10-14 23:10:09,451 INFO L226 Difference]: Without dead ends: 25497 [2020-10-14 23:10:09,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:10:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25497 states. [2020-10-14 23:10:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25497 to 24983. [2020-10-14 23:10:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24983 states. [2020-10-14 23:10:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24983 states to 24983 states and 31592 transitions. [2020-10-14 23:10:10,421 INFO L78 Accepts]: Start accepts. Automaton has 24983 states and 31592 transitions. Word has length 135 [2020-10-14 23:10:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:10:10,424 INFO L479 AbstractCegarLoop]: Abstraction has 24983 states and 31592 transitions. [2020-10-14 23:10:10,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:10:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 24983 states and 31592 transitions. [2020-10-14 23:10:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 23:10:10,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:10:10,433 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:10,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:10:10,434 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:10:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:10:10,435 INFO L82 PathProgramCache]: Analyzing trace with hash 820980910, now seen corresponding path program 1 times [2020-10-14 23:10:10,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:10:10,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263589918] [2020-10-14 23:10:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:10:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:11,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:13,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:15,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:15,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 23:10:15,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:10:15,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 23:10:15,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:15,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:10:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:10:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 23:10:15,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:15,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:10:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:15,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:15,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:10:15,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:10:15,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:15,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:10:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:10:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:10:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:15,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:16,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:16,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:10:16,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:10:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 23:10:16,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:16,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 23:10:16,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:10:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 23:10:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:16,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:16,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:10:16,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:16,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 23:10:16,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:16,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:10:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:10:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 23:10:16,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:10:16,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263589918] [2020-10-14 23:10:16,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:10:16,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:10:16,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833256078] [2020-10-14 23:10:16,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:10:16,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:10:16,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:10:16,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:10:16,638 INFO L87 Difference]: Start difference. First operand 24983 states and 31592 transitions. Second operand 7 states.