/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 SingleStatement --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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:21,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:21,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:21,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:21,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:21,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:21,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:21,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:21,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:21,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:21,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:21,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:21,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:21,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:21,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:21,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:21,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:21,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:21,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:21,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:21,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:21,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:21,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:21,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:21,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:21,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:21,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:21,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:21,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:21,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:21,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:21,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:21,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:21,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:21,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:21,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:21,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:21,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:21,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:21,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:21,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:21,982 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 [2020-09-25 10:05:22,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:22,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:22,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:22,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:22,034 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:22,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:22,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:22,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:22,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:22,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:22,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:22,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:22,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:22,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:22,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:22,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:22,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:22,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:22,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:22,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:22,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:22,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:22,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:22,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:22,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:22,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:22,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:22,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:22,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:22,041 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 -> SingleStatement 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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=true; [2020-09-25 10:05:22,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:22,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:22,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:22,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:22,575 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:22,576 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 10:05:22,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/564739b3a/2f4e477b9d284fa68744ea6f576a7255/FLAG02ca52bb6 [2020-09-25 10:05:23,271 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:23,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 10:05:23,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/564739b3a/2f4e477b9d284fa68744ea6f576a7255/FLAG02ca52bb6 [2020-09-25 10:05:23,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/564739b3a/2f4e477b9d284fa68744ea6f576a7255 [2020-09-25 10:05:23,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:23,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:23,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:23,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:23,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:23,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:23" (1/1) ... [2020-09-25 10:05:23,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b9b1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:23, skipping insertion in model container [2020-09-25 10:05:23,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:23" (1/1) ... [2020-09-25 10:05:23,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:23,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:24,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:24,098 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:24,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:24,211 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:24,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24 WrapperNode [2020-09-25 10:05:24,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:24,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:24,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:24,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:24,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:24,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:24,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:24,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:24,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (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 [2020-09-25 10:05:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:24,371 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:24,985 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:24,986 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 10:05:24,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:24 BoogieIcfgContainer [2020-09-25 10:05:24,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:24,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:24,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:24,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:24,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:23" (1/3) ... [2020-09-25 10:05:24,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc7b5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:24, skipping insertion in model container [2020-09-25 10:05:25,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (2/3) ... [2020-09-25 10:05:25,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc7b5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:25, skipping insertion in model container [2020-09-25 10:05:25,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:24" (3/3) ... [2020-09-25 10:05:25,003 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-25 10:05:25,017 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:25,029 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-25 10:05:25,055 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-25 10:05:25,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:25,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:25,092 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:25,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:25,092 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:25,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:25,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:25,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 10:05:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 10:05:25,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:25,134 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] [2020-09-25 10:05:25,135 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:25,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:25,144 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-25 10:05:25,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:25,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244157911] [2020-09-25 10:05:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:25,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:25,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:25,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 10:05:25,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-25 10:05:25,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:25,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:25,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:05:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:05:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:26,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:26,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:26,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:26,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:05:26,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:26,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:26,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:26,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244157911] [2020-09-25 10:05:26,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:26,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:05:26,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42285660] [2020-09-25 10:05:26,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:05:26,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:26,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:05:26,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:05:26,166 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 8 states. [2020-09-25 10:05:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:26,626 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2020-09-25 10:05:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:05:26,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-25 10:05:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:26,644 INFO L225 Difference]: With dead ends: 205 [2020-09-25 10:05:26,644 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 10:05:26,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:05:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 10:05:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-25 10:05:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 10:05:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-25 10:05:26,710 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 21 [2020-09-25 10:05:26,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:26,710 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-25 10:05:26,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:05:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-25 10:05:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 10:05:26,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:26,712 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] [2020-09-25 10:05:26,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:26,713 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:26,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-25 10:05:26,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:26,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817845220] [2020-09-25 10:05:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:26,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:26,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:05:26,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:26,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 10:05:26,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:26,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:05:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:05:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:27,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:05:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:27,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:27,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817845220] [2020-09-25 10:05:27,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:27,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:27,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432025202] [2020-09-25 10:05:27,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:27,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:27,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:27,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:27,068 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-25 10:05:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:27,333 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-25 10:05:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:05:27,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 10:05:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:27,339 INFO L225 Difference]: With dead ends: 120 [2020-09-25 10:05:27,339 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 10:05:27,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:05:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 10:05:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-25 10:05:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 10:05:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-25 10:05:27,353 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-25 10:05:27,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:27,354 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-25 10:05:27,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:27,354 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-25 10:05:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 10:05:27,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:27,356 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] [2020-09-25 10:05:27,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:27,357 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:27,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-25 10:05:27,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:27,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382897758] [2020-09-25 10:05:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:27,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:27,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:27,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 10:05:27,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:27,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-09-25 10:05:27,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:27,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 10:05:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:05:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:27,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:27,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:27,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:27,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:05:27,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:27,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:27,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382897758] [2020-09-25 10:05:27,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:27,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:28,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491236230] [2020-09-25 10:05:28,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:28,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:28,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:28,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:28,001 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-25 10:05:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:28,217 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-25 10:05:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:05:28,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 10:05:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:28,220 INFO L225 Difference]: With dead ends: 136 [2020-09-25 10:05:28,220 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 10:05:28,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:05:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 10:05:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-25 10:05:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 10:05:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 10:05:28,231 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-25 10:05:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:28,231 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 10:05:28,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 10:05:28,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 10:05:28,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:28,233 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:05:28,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:05:28,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:28,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:28,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-25 10:05:28,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:28,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889011939] [2020-09-25 10:05:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:28,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:29,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:05:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-09-25 10:05:29,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:29,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:05:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:05:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:05:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:29,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:29,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:29,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:29,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:05:29,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:29,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:29,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889011939] [2020-09-25 10:05:29,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:29,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:05:29,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001610449] [2020-09-25 10:05:29,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:05:29,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:29,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:05:29,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:05:29,872 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-25 10:05:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:31,100 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-25 10:05:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:05:31,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-25 10:05:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:31,103 INFO L225 Difference]: With dead ends: 166 [2020-09-25 10:05:31,103 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 10:05:31,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-25 10:05:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 10:05:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-25 10:05:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 10:05:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-25 10:05:31,136 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-25 10:05:31,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:31,136 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-25 10:05:31,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:05:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-25 10:05:31,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 10:05:31,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:31,139 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:05:31,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:05:31,140 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:31,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-25 10:05:31,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:31,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268578283] [2020-09-25 10:05:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:31,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:31,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:36,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:36,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 10:05:36,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:05:36,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4860 [2020-09-25 10:05:36,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:36,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:05:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 10:05:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 10:05:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:36,528 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-09-25 10:05:36,659 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-09-25 10:05:37,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:37,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:37,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:37,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:05:37,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:37,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:37,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268578283] [2020-09-25 10:05:37,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:37,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:05:37,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501189222] [2020-09-25 10:05:37,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:05:37,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:37,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:05:37,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:05:37,105 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 16 states. [2020-09-25 10:05:37,483 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-09-25 10:05:37,746 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-09-25 10:05:37,975 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-09-25 10:05:38,501 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-09-25 10:05:38,825 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-09-25 10:05:39,142 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-09-25 10:05:39,418 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 10:05:39,687 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-09-25 10:05:39,958 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-09-25 10:05:40,180 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-09-25 10:05:40,385 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-25 10:05:40,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:40,537 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2020-09-25 10:05:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:05:40,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-09-25 10:05:40,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:40,539 INFO L225 Difference]: With dead ends: 155 [2020-09-25 10:05:40,539 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 10:05:40,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:05:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 10:05:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 118. [2020-09-25 10:05:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-25 10:05:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2020-09-25 10:05:40,555 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 43 [2020-09-25 10:05:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:40,556 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2020-09-25 10:05:40,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:05:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2020-09-25 10:05:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:05:40,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:40,558 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:05:40,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:05:40,559 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:40,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:40,559 INFO L82 PathProgramCache]: Analyzing trace with hash -261235589, now seen corresponding path program 1 times [2020-09-25 10:05:40,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:40,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105360444] [2020-09-25 10:05:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:40,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:40,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:42,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:05:42,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-09-25 10:05:42,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:42,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:05:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 10:05:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 10:05:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:42,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:42,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:42,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:42,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:42,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:42,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:42,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:42,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:42,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:42,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:42,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105360444] [2020-09-25 10:05:42,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:42,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:05:42,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751949016] [2020-09-25 10:05:42,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:05:42,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:42,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:05:42,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:05:42,794 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 14 states. [2020-09-25 10:05:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:43,836 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2020-09-25 10:05:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:05:43,836 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-09-25 10:05:43,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:43,837 INFO L225 Difference]: With dead ends: 165 [2020-09-25 10:05:43,838 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 10:05:43,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-09-25 10:05:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 10:05:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 113. [2020-09-25 10:05:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 10:05:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2020-09-25 10:05:43,848 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 47 [2020-09-25 10:05:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:43,849 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2020-09-25 10:05:43,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:05:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2020-09-25 10:05:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:05:43,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:43,851 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:05:43,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:05:43,851 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:43,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-25 10:05:43,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:43,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952218356] [2020-09-25 10:05:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:43,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:45,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:45,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:05:45,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1295 [2020-09-25 10:05:45,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:45,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:05:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:05:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 10:05:45,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:46,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:46,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:46,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:46,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:46,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:46,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:46,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:46,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:46,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952218356] [2020-09-25 10:05:46,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:46,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:05:46,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269704987] [2020-09-25 10:05:46,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:05:46,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:46,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:05:46,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:05:46,177 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 19 states. [2020-09-25 10:05:48,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:48,022 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-25 10:05:48,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 10:05:48,022 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-25 10:05:48,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:48,024 INFO L225 Difference]: With dead ends: 188 [2020-09-25 10:05:48,024 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 10:05:48,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 10:05:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 10:05:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 122. [2020-09-25 10:05:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 10:05:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-25 10:05:48,035 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 47 [2020-09-25 10:05:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:48,035 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-25 10:05:48,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:05:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-25 10:05:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 10:05:48,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:48,038 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:05:48,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:05:48,038 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:48,038 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-25 10:05:48,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:48,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548886668] [2020-09-25 10:05:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:53,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:05:53,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:05:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:05:53,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:53,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 10:05:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:05:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:53,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:53,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:53,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:05:53,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:53,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:53,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:05:53,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548886668] [2020-09-25 10:05:53,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:53,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:53,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202852376] [2020-09-25 10:05:53,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:53,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:53,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:53,152 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand 6 states. [2020-09-25 10:05:53,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:53,384 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-09-25 10:05:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:05:53,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 10:05:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:53,385 INFO L225 Difference]: With dead ends: 150 [2020-09-25 10:05:53,385 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 10:05:53,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:05:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 10:05:53,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2020-09-25 10:05:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 10:05:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-25 10:05:53,405 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 49 [2020-09-25 10:05:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:53,405 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-25 10:05:53,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-25 10:05:53,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 10:05:53,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:53,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 10:05:53,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:05:53,408 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:53,408 INFO L82 PathProgramCache]: Analyzing trace with hash -62360599, now seen corresponding path program 2 times [2020-09-25 10:05:53,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:53,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628491246] [2020-09-25 10:05:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:53,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 10:05:53,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 10:05:53,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:53,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:05:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:05:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 10:05:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:53,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:53,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:53,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:53,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:53,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:53,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:05:53,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628491246] [2020-09-25 10:05:53,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:53,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:05:53,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046725218] [2020-09-25 10:05:53,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:53,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:53,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:53,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:53,668 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand 7 states. [2020-09-25 10:05:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:53,977 INFO L93 Difference]: Finished difference Result 147 states and 154 transitions. [2020-09-25 10:05:53,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:05:53,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 10:05:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:53,979 INFO L225 Difference]: With dead ends: 147 [2020-09-25 10:05:53,979 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 10:05:53,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:05:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 10:05:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-25 10:05:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 10:05:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 10:05:53,987 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 50 [2020-09-25 10:05:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:53,988 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 10:05:53,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 10:05:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 10:05:53,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:53,989 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 10:05:53,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:05:53,990 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:53,990 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-25 10:05:53,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:53,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060174456] [2020-09-25 10:05:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 10:05:55,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:55,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-09-25 10:05:55,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:05:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:05:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:05:55,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:56,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:56,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:56,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:56,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:56,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:56,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:56,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:56,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:56,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:56,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:56,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060174456] [2020-09-25 10:05:56,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:56,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:05:56,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286976871] [2020-09-25 10:05:56,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:05:56,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:56,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:05:56,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:05:56,074 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-25 10:05:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:57,615 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-25 10:05:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 10:05:57,616 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-25 10:05:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:57,617 INFO L225 Difference]: With dead ends: 186 [2020-09-25 10:05:57,617 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 10:05:57,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 10:05:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 10:05:57,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-25 10:05:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 10:05:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-25 10:05:57,629 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-25 10:05:57,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:57,629 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-25 10:05:57,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:05:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-25 10:05:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 10:05:57,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:57,631 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:05:57,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:05:57,635 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:57,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-25 10:05:57,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:57,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175722315] [2020-09-25 10:05:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:00,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 10:06:02,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:02,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4600 [2020-09-25 10:06:02,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:06:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 10:06:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:06:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:02,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:02,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:02,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175722315] [2020-09-25 10:06:02,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:02,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:06:02,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684248389] [2020-09-25 10:06:02,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:06:02,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:02,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:06:02,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:06:02,631 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 15 states. [2020-09-25 10:06:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:03,649 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-25 10:06:03,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:06:03,650 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 10:06:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:03,651 INFO L225 Difference]: With dead ends: 188 [2020-09-25 10:06:03,652 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 10:06:03,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:06:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 10:06:03,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 135. [2020-09-25 10:06:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 10:06:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-25 10:06:03,662 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 56 [2020-09-25 10:06:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:03,662 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-25 10:06:03,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:06:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-25 10:06:03,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 10:06:03,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:03,664 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 10:06:03,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:06:03,664 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:03,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-25 10:06:03,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:03,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291872433] [2020-09-25 10:06:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:03,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:05,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 10:06:05,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1956 [2020-09-25 10:06:05,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:05,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 10:06:05,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:05,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 10:06:05,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:06,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:06,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:06,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:06,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:06:06,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:06,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:06,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:06,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291872433] [2020-09-25 10:06:06,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:06,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 10:06:06,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866275381] [2020-09-25 10:06:06,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 10:06:06,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:06,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 10:06:06,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:06:06,785 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-25 10:06:07,404 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-09-25 10:06:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:09,909 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-09-25 10:06:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 10:06:09,909 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-09-25 10:06:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:09,910 INFO L225 Difference]: With dead ends: 163 [2020-09-25 10:06:09,911 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 10:06:09,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 10:06:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 10:06:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-09-25 10:06:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 10:06:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 10:06:09,924 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 60 [2020-09-25 10:06:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:09,925 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 10:06:09,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 10:06:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 10:06:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 10:06:09,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:09,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 10:06:09,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 10:06:09,926 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:09,927 INFO L82 PathProgramCache]: Analyzing trace with hash -412836324, now seen corresponding path program 2 times [2020-09-25 10:06:09,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:09,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128630948] [2020-09-25 10:06:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking...