/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:24:04,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:24:04,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:24:04,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:24:04,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:24:04,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:24:04,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:24:04,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:24:04,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:24:04,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:24:04,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:24:04,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:24:04,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:24:04,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:24:04,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:24:04,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:24:04,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:24:04,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:24:04,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:24:04,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:24:04,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:24:04,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:24:04,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:24:04,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:24:04,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:24:04,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:24:04,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:24:04,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:24:04,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:24:04,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:24:04,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:24:04,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:24:04,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:24:04,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:24:04,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:24:04,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:24:04,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:24:04,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:24:04,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:24:04,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:24:04,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:24:04,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:24:04,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:24:04,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:24:04,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:24:04,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:24:04,994 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:24:04,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:24:04,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:24:04,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:24:04,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:24:04,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:24:04,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:24:04,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:24:04,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:24:04,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:24:04,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:24:04,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:24:04,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:24:04,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:24:04,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:24:04,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:24:04,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:24:04,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:24:04,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:24:04,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:24:04,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:24:04,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:24:04,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:24:04,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:24:04,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:24:04,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:24:05,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:24:05,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:24:05,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:24:05,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:24:05,376 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:24:05,377 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48.c [2020-10-12 15:24:05,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1770bd24/7a1b9a86674345d88853a67cc6f8b8ba/FLAGd94f18b84 [2020-10-12 15:24:06,508 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:24:06,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label48.c [2020-10-12 15:24:06,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1770bd24/7a1b9a86674345d88853a67cc6f8b8ba/FLAGd94f18b84 [2020-10-12 15:24:06,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1770bd24/7a1b9a86674345d88853a67cc6f8b8ba [2020-10-12 15:24:06,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:24:06,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:24:06,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:24:06,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:24:06,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:24:06,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:24:06" (1/1) ... [2020-10-12 15:24:06,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2627f451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:06, skipping insertion in model container [2020-10-12 15:24:06,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:24:06" (1/1) ... [2020-10-12 15:24:06,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:24:07,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:24:09,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:24:09,647 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:24:10,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:24:11,030 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:24:11,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11 WrapperNode [2020-10-12 15:24:11,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:24:11,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:24:11,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:24:11,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:24:11,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11" (1/1) ... [2020-10-12 15:24:11,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11" (1/1) ... [2020-10-12 15:24:11,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11" (1/1) ... [2020-10-12 15:24:11,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11" (1/1) ... [2020-10-12 15:24:11,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11" (1/1) ... [2020-10-12 15:24:11,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11" (1/1) ... [2020-10-12 15:24:11,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11" (1/1) ... [2020-10-12 15:24:11,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:24:11,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:24:11,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:24:11,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:24:11,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:24:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:24:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:24:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 15:24:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 15:24:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 15:24:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 15:24:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 15:24:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 15:24:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:24:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 15:24:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 15:24:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 15:24:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 15:24:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 15:24:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 15:24:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:24:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:24:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:24:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:24:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:24:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:24:26,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:24:26,425 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:24:26,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:24:26 BoogieIcfgContainer [2020-10-12 15:24:26,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:24:26,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:24:26,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:24:26,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:24:26,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:24:06" (1/3) ... [2020-10-12 15:24:26,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38872059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:24:26, skipping insertion in model container [2020-10-12 15:24:26,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:11" (2/3) ... [2020-10-12 15:24:26,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38872059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:24:26, skipping insertion in model container [2020-10-12 15:24:26,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:24:26" (3/3) ... [2020-10-12 15:24:26,471 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label48.c [2020-10-12 15:24:26,488 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:24:26,505 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:24:26,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:24:26,581 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:24:26,581 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:24:26,581 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:24:26,581 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:24:26,582 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:24:26,582 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:24:26,582 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:24:26,582 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:24:26,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-12 15:24:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 15:24:26,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:24:26,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:24:26,671 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:24:26,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:24:26,681 INFO L82 PathProgramCache]: Analyzing trace with hash 972307908, now seen corresponding path program 1 times [2020-10-12 15:24:26,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:24:26,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710533702] [2020-10-12 15:24:26,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:24:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:24:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:27,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:24:27,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 15:24:27,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:24:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-12 15:24:27,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:24:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:24:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:24:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 15:24:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:24:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:24:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:24:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:27,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:24:27,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:24:27,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:24:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 15:24:27,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:24:27,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:24:27,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:24:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:24:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:24:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:24:27,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710533702] [2020-10-12 15:24:27,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:24:27,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:24:27,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996609776] [2020-10-12 15:24:27,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:24:27,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:24:27,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:24:27,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:24:27,931 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-12 15:25:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:25:04,324 INFO L93 Difference]: Finished difference Result 6573 states and 12489 transitions. [2020-10-12 15:25:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:25:04,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-12 15:25:04,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:25:04,409 INFO L225 Difference]: With dead ends: 6573 [2020-10-12 15:25:04,410 INFO L226 Difference]: Without dead ends: 4728 [2020-10-12 15:25:04,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:25:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2020-10-12 15:25:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4625. [2020-10-12 15:25:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4625 states. [2020-10-12 15:25:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 8166 transitions. [2020-10-12 15:25:04,802 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 8166 transitions. Word has length 71 [2020-10-12 15:25:04,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:25:04,806 INFO L479 AbstractCegarLoop]: Abstraction has 4625 states and 8166 transitions. [2020-10-12 15:25:04,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:25:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 8166 transitions. [2020-10-12 15:25:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 15:25:04,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:25:04,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:25:04,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:25:04,831 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:25:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:25:04,831 INFO L82 PathProgramCache]: Analyzing trace with hash 682468142, now seen corresponding path program 1 times [2020-10-12 15:25:04,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:25:04,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199977273] [2020-10-12 15:25:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:25:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:06,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:06,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 15:25:06,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:25:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-10-12 15:25:06,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:25:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:25:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 15:25:06,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 15:25:06,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:25:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:06,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:06,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:06,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:25:06,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:25:06,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:25:06,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:06,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:25:06,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:25:06,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:25:06,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:07,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:25:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:07,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:07,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:07,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 15:25:07,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:25:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-12 15:25:07,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:25:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:25:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 15:25:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:25:07,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199977273] [2020-10-12 15:25:07,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:25:07,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:25:07,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762231356] [2020-10-12 15:25:07,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:25:07,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:25:07,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:25:07,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:25:07,624 INFO L87 Difference]: Start difference. First operand 4625 states and 8166 transitions. Second operand 7 states. [2020-10-12 15:25:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:25:41,549 INFO L93 Difference]: Finished difference Result 13670 states and 24457 transitions. [2020-10-12 15:25:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:25:41,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-12 15:25:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:25:41,609 INFO L225 Difference]: With dead ends: 13670 [2020-10-12 15:25:41,609 INFO L226 Difference]: Without dead ends: 9051 [2020-10-12 15:25:41,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:25:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9051 states. [2020-10-12 15:25:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9051 to 8967. [2020-10-12 15:25:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8967 states. [2020-10-12 15:25:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8967 states to 8967 states and 13522 transitions. [2020-10-12 15:25:42,005 INFO L78 Accepts]: Start accepts. Automaton has 8967 states and 13522 transitions. Word has length 146 [2020-10-12 15:25:42,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:25:42,008 INFO L479 AbstractCegarLoop]: Abstraction has 8967 states and 13522 transitions. [2020-10-12 15:25:42,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:25:42,008 INFO L276 IsEmpty]: Start isEmpty. Operand 8967 states and 13522 transitions. [2020-10-12 15:25:42,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 15:25:42,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:25:42,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:25:42,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:25:42,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:25:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:25:42,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1529536518, now seen corresponding path program 1 times [2020-10-12 15:25:42,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:25:42,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119267211] [2020-10-12 15:25:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:25:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:42,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:43,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:43,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 15:25:43,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:25:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1894 [2020-10-12 15:25:43,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:25:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 15:25:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 15:25:43,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:25:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:44,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:44,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:25:44,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:25:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:25:44,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:25:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:25:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:25:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:25:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:44,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 15:25:44,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:25:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 15:25:44,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:25:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:25:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 15:25:44,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:25:44,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119267211] [2020-10-12 15:25:44,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:25:44,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:25:44,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133641856] [2020-10-12 15:25:44,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:25:44,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:25:44,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:25:44,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:25:44,657 INFO L87 Difference]: Start difference. First operand 8967 states and 13522 transitions. Second operand 8 states. [2020-10-12 15:25:45,956 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-12 15:25:46,122 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-12 15:26:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:26:22,194 INFO L93 Difference]: Finished difference Result 18202 states and 27422 transitions. [2020-10-12 15:26:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:26:22,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-10-12 15:26:22,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:26:22,255 INFO L225 Difference]: With dead ends: 18202 [2020-10-12 15:26:22,255 INFO L226 Difference]: Without dead ends: 8979 [2020-10-12 15:26:22,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:26:22,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8979 states. [2020-10-12 15:26:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8979 to 8967. [2020-10-12 15:26:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8967 states. [2020-10-12 15:26:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8967 states to 8967 states and 13494 transitions. [2020-10-12 15:26:22,618 INFO L78 Accepts]: Start accepts. Automaton has 8967 states and 13494 transitions. Word has length 152 [2020-10-12 15:26:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:26:22,621 INFO L479 AbstractCegarLoop]: Abstraction has 8967 states and 13494 transitions. [2020-10-12 15:26:22,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:26:22,626 INFO L276 IsEmpty]: Start isEmpty. Operand 8967 states and 13494 transitions. [2020-10-12 15:26:22,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 15:26:22,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:26:22,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:26:22,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:26:22,633 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:26:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:26:22,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1043857852, now seen corresponding path program 1 times [2020-10-12 15:26:22,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:26:22,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628306851] [2020-10-12 15:26:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:26:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:22,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:23,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:23,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-12 15:26:23,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:26:23,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-12 15:26:23,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:26:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:26:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 15:26:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:26:23,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:26:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:23,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:23,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:23,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:26:23,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:26:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:26:23,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:26:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:26:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:26:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:26:23,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:26:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:23,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:24,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:24,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 15:26:24,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:26:24,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-12 15:26:24,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:26:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:26:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 15:26:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:26:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:26:24,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628306851] [2020-10-12 15:26:24,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:26:24,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:26:24,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700645803] [2020-10-12 15:26:24,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:26:24,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:26:24,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:26:24,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:26:24,333 INFO L87 Difference]: Start difference. First operand 8967 states and 13494 transitions. Second operand 7 states. [2020-10-12 15:27:21,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:27:21,829 INFO L93 Difference]: Finished difference Result 27001 states and 41252 transitions. [2020-10-12 15:27:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:27:21,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-12 15:27:21,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:27:21,899 INFO L225 Difference]: With dead ends: 27001 [2020-10-12 15:27:21,899 INFO L226 Difference]: Without dead ends: 18040 [2020-10-12 15:27:21,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:27:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18040 states. [2020-10-12 15:27:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18040 to 17727. [2020-10-12 15:27:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17727 states. [2020-10-12 15:27:22,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17727 states to 17727 states and 25962 transitions. [2020-10-12 15:27:22,350 INFO L78 Accepts]: Start accepts. Automaton has 17727 states and 25962 transitions. Word has length 194 [2020-10-12 15:27:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:27:22,353 INFO L479 AbstractCegarLoop]: Abstraction has 17727 states and 25962 transitions. [2020-10-12 15:27:22,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:27:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 17727 states and 25962 transitions. [2020-10-12 15:27:22,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-12 15:27:22,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:27:22,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 15:27:22,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:27:22,359 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:27:22,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:27:22,359 INFO L82 PathProgramCache]: Analyzing trace with hash 441731746, now seen corresponding path program 1 times [2020-10-12 15:27:22,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:27:22,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099972691] [2020-10-12 15:27:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:27:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:22,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:22,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:25,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-12 15:27:27,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:27:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 15:27:27,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:27:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:27:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 15:27:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:27:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:27:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:27,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:27:27,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:27:27,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:27:27,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:27:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:27:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:27:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:27:27,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:27:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:27,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:27,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:27,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 15:27:27,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:27:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 15:27:27,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:27:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:27:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 15:27:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:27:27,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 15:27:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:27,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:27,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 15:27:27,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:27:27,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 15:27:27,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:27:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 15:27:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:27:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:27:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 128 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:27:28,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099972691] [2020-10-12 15:27:28,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:27:28,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:27:28,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779923546] [2020-10-12 15:27:28,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:27:28,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:27:28,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:27:28,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:27:28,004 INFO L87 Difference]: Start difference. First operand 17727 states and 25962 transitions. Second operand 7 states.