/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:49:53,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:49:53,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:49:53,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:49:53,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:49:53,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:49:53,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:49:53,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:49:53,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:49:53,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:49:53,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:49:53,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:49:53,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:49:53,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:49:53,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:49:53,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:49:53,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:49:53,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:49:53,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:49:53,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:49:53,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:49:53,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:49:53,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:49:53,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:49:53,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:49:53,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:49:53,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:49:53,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:49:53,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:49:53,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:49:53,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:49:53,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:49:53,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:49:53,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:49:53,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:49:53,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:49:53,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:49:53,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:49:53,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:49:53,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:49:53,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:49:53,142 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 07:49:53,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:49:53,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:49:53,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:49:53,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:49:53,171 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:49:53,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:49:53,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:49:53,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:49:53,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:49:53,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:49:53,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:49:53,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:49:53,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:49:53,173 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:49:53,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:49:53,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:49:53,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:49:53,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:49:53,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:49:53,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:49:53,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:49:53,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:49:53,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:49:53,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:49:53,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:49:53,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:49:53,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:49:53,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:49:53,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:49:53,176 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:49:53,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:49:53,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:49:53,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:49:53,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:49:53,642 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:49:53,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-25 07:49:53,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e86696b50/df14698f6b67458bb01eed236b708f04/FLAGed42147e0 [2020-09-25 07:49:54,408 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:49:54,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-25 07:49:54,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e86696b50/df14698f6b67458bb01eed236b708f04/FLAGed42147e0 [2020-09-25 07:49:54,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e86696b50/df14698f6b67458bb01eed236b708f04 [2020-09-25 07:49:54,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:49:54,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:49:54,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:49:54,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:49:54,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:49:54,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:49:54" (1/1) ... [2020-09-25 07:49:54,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d6e00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:54, skipping insertion in model container [2020-09-25 07:49:54,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:49:54" (1/1) ... [2020-09-25 07:49:54,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:49:54,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:49:55,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:49:55,243 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:49:55,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:49:55,390 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:49:55,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55 WrapperNode [2020-09-25 07:49:55,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:49:55,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:49:55,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:49:55,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:49:55,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55" (1/1) ... [2020-09-25 07:49:55,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55" (1/1) ... [2020-09-25 07:49:55,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55" (1/1) ... [2020-09-25 07:49:55,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55" (1/1) ... [2020-09-25 07:49:55,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55" (1/1) ... [2020-09-25 07:49:55,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55" (1/1) ... [2020-09-25 07:49:55,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55" (1/1) ... [2020-09-25 07:49:55,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:49:55,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:49:55,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:49:55,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:49:55,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55" (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 07:49:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:49:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:49:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:49:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 07:49:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 07:49:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 07:49:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 07:49:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 07:49:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 07:49:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 07:49:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 07:49:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 07:49:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 07:49:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 07:49:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 07:49:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 07:49:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 07:49:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 07:49:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 07:49:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 07:49:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 07:49:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 07:49:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 07:49:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 07:49:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 07:49:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 07:49:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 07:49:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 07:49:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 07:49:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 07:49:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 07:49:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 07:49:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 07:49:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 07:49:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 07:49:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 07:49:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 07:49:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 07:49:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 07:49:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 07:49:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 07:49:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 07:49:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 07:49:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 07:49:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 07:49:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 07:49:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 07:49:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 07:49:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 07:49:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 07:49:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 07:49:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 07:49:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 07:49:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:49:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 07:49:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 07:49:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:49:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 07:49:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 07:49:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 07:49:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 07:49:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 07:49:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 07:49:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 07:49:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 07:49:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 07:49:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:49:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 07:49:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 07:49:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 07:49:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 07:49:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 07:49:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 07:49:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 07:49:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 07:49:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 07:49:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 07:49:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 07:49:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 07:49:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 07:49:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 07:49:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 07:49:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 07:49:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 07:49:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 07:49:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 07:49:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 07:49:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 07:49:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 07:49:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 07:49:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 07:49:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 07:49:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 07:49:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 07:49:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 07:49:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 07:49:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 07:49:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 07:49:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 07:49:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 07:49:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 07:49:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 07:49:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 07:49:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 07:49:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 07:49:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 07:49:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:49:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:49:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:49:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:49:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:49:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:49:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:49:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:49:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:49:56,404 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:49:56,405 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-25 07:49:56,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:49:56 BoogieIcfgContainer [2020-09-25 07:49:56,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:49:56,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:49:56,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:49:56,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:49:56,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:49:54" (1/3) ... [2020-09-25 07:49:56,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703facb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:49:56, skipping insertion in model container [2020-09-25 07:49:56,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:55" (2/3) ... [2020-09-25 07:49:56,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703facb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:49:56, skipping insertion in model container [2020-09-25 07:49:56,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:49:56" (3/3) ... [2020-09-25 07:49:56,435 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-25 07:49:56,449 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:49:56,462 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-25 07:49:56,487 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-25 07:49:56,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:49:56,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:49:56,537 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:49:56,538 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:49:56,538 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:49:56,538 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:49:56,538 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:49:56,538 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:49:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-25 07:49:56,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 07:49:56,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:56,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:56,580 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-09-25 07:49:56,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:56,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933939066] [2020-09-25 07:49:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:57,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:57,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:49:57,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 07:49:57,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:57,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:49:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:49:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:49:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:49:57,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:57,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:57,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:57,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:49:57,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:57,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:57,133 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 07:49:57,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933939066] [2020-09-25 07:49:57,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:49:57,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:49:57,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510998898] [2020-09-25 07:49:57,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:49:57,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:57,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:49:57,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:49:57,167 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-25 07:49:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:57,566 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-09-25 07:49:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:49:57,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-25 07:49:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:57,586 INFO L225 Difference]: With dead ends: 359 [2020-09-25 07:49:57,586 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 07:49:57,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:49:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 07:49:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-25 07:49:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 07:49:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-09-25 07:49:57,681 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-09-25 07:49:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:57,682 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-09-25 07:49:57,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:49:57,682 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-09-25 07:49:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 07:49:57,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:57,685 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] [2020-09-25 07:49:57,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:49:57,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:57,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:57,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-09-25 07:49:57,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:57,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977959191] [2020-09-25 07:49:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:58,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:49:58,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:49:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-25 07:49:58,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:58,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:49:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 07:49:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:49:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:49:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:58,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:58,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:58,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:58,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:49:58,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:58,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:58,118 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 07:49:58,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977959191] [2020-09-25 07:49:58,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:49:58,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:49:58,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373466119] [2020-09-25 07:49:58,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:49:58,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:58,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:49:58,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:49:58,123 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 4 states. [2020-09-25 07:49:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:58,405 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2020-09-25 07:49:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:49:58,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-25 07:49:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:58,408 INFO L225 Difference]: With dead ends: 170 [2020-09-25 07:49:58,409 INFO L226 Difference]: Without dead ends: 165 [2020-09-25 07:49:58,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:49:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-25 07:49:58,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-25 07:49:58,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-25 07:49:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-09-25 07:49:58,459 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 25 [2020-09-25 07:49:58,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:58,460 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-09-25 07:49:58,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:49:58,460 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-09-25 07:49:58,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 07:49:58,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:58,462 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 07:49:58,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:49:58,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-09-25 07:49:58,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:58,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210610166] [2020-09-25 07:49:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:58,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:58,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:58,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:49:58,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:49:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 07:49:58,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:58,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:49:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:49:58,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:49:58,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:58,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:58,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:49:58,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:58,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:49:58,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:58,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:58,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:58,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:58,934 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 07:49:58,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210610166] [2020-09-25 07:49:58,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:49:58,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:49:58,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940109193] [2020-09-25 07:49:58,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:49:58,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:58,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:49:58,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:49:58,937 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 6 states. [2020-09-25 07:49:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:59,381 INFO L93 Difference]: Finished difference Result 263 states and 278 transitions. [2020-09-25 07:49:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:49:59,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 07:49:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:59,384 INFO L225 Difference]: With dead ends: 263 [2020-09-25 07:49:59,384 INFO L226 Difference]: Without dead ends: 258 [2020-09-25 07:49:59,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:49:59,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-09-25 07:49:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 170. [2020-09-25 07:49:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-25 07:49:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 180 transitions. [2020-09-25 07:49:59,399 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 180 transitions. Word has length 27 [2020-09-25 07:49:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:59,400 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 180 transitions. [2020-09-25 07:49:59,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:49:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 180 transitions. [2020-09-25 07:49:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 07:49:59,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:59,402 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] [2020-09-25 07:49:59,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:49:59,402 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:59,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:59,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1500955686, now seen corresponding path program 1 times [2020-09-25 07:49:59,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:59,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688610844] [2020-09-25 07:49:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:59,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:00,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:00,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:50:00,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:50:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-25 07:50:00,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:00,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:50:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:00,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:00,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:00,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:00,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:00,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:50:00,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:00,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:00,105 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 07:50:00,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688610844] [2020-09-25 07:50:00,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:00,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:50:00,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085042830] [2020-09-25 07:50:00,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:50:00,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:00,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:50:00,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:50:00,110 INFO L87 Difference]: Start difference. First operand 170 states and 180 transitions. Second operand 6 states. [2020-09-25 07:50:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:00,576 INFO L93 Difference]: Finished difference Result 278 states and 294 transitions. [2020-09-25 07:50:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:50:00,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 07:50:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:00,579 INFO L225 Difference]: With dead ends: 278 [2020-09-25 07:50:00,580 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 07:50:00,581 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 07:50:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 07:50:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 169. [2020-09-25 07:50:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-25 07:50:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 179 transitions. [2020-09-25 07:50:00,591 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 179 transitions. Word has length 33 [2020-09-25 07:50:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:00,592 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 179 transitions. [2020-09-25 07:50:00,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:50:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 179 transitions. [2020-09-25 07:50:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 07:50:00,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:00,594 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] [2020-09-25 07:50:00,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:50:00,595 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:00,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1216115010, now seen corresponding path program 1 times [2020-09-25 07:50:00,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:00,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464279465] [2020-09-25 07:50:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:00,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:01,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:01,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:50:01,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1376 [2020-09-25 07:50:01,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:01,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 07:50:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:50:01,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:02,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:02,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:02,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:02,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:02,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:02,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:50:02,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:02,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:02,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:02,201 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 07:50:02,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464279465] [2020-09-25 07:50:02,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:02,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:50:02,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43220163] [2020-09-25 07:50:02,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:50:02,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:02,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:50:02,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:50:02,204 INFO L87 Difference]: Start difference. First operand 169 states and 179 transitions. Second operand 8 states. [2020-09-25 07:50:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:02,908 INFO L93 Difference]: Finished difference Result 256 states and 271 transitions. [2020-09-25 07:50:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:50:02,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 07:50:02,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:02,911 INFO L225 Difference]: With dead ends: 256 [2020-09-25 07:50:02,911 INFO L226 Difference]: Without dead ends: 251 [2020-09-25 07:50:02,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:50:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-25 07:50:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 158. [2020-09-25 07:50:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 07:50:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 167 transitions. [2020-09-25 07:50:02,941 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 167 transitions. Word has length 34 [2020-09-25 07:50:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:02,942 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 167 transitions. [2020-09-25 07:50:02,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:50:02,942 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 167 transitions. [2020-09-25 07:50:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 07:50:02,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:02,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:02,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:50:02,947 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:02,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:02,950 INFO L82 PathProgramCache]: Analyzing trace with hash 125861883, now seen corresponding path program 1 times [2020-09-25 07:50:02,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:02,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146040028] [2020-09-25 07:50:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:02,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:03,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:03,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:03,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:05,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:05,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 07:50:05,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:50:05,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2458 [2020-09-25 07:50:05,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:05,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:50:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 07:50:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:50:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:50:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:05,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:05,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:05,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:05,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:05,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:05,650 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 07:50:05,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146040028] [2020-09-25 07:50:05,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:05,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 07:50:05,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362778893] [2020-09-25 07:50:05,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:50:05,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:05,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:50:05,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:05,653 INFO L87 Difference]: Start difference. First operand 158 states and 167 transitions. Second operand 9 states. [2020-09-25 07:50:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:06,657 INFO L93 Difference]: Finished difference Result 241 states and 255 transitions. [2020-09-25 07:50:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 07:50:06,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-25 07:50:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:06,662 INFO L225 Difference]: With dead ends: 241 [2020-09-25 07:50:06,662 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 07:50:06,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-09-25 07:50:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 07:50:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 154. [2020-09-25 07:50:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 07:50:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 163 transitions. [2020-09-25 07:50:06,670 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 163 transitions. Word has length 40 [2020-09-25 07:50:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:06,670 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 163 transitions. [2020-09-25 07:50:06,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:50:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 163 transitions. [2020-09-25 07:50:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 07:50:06,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:06,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:06,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:50:06,675 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:06,678 INFO L82 PathProgramCache]: Analyzing trace with hash 682713107, now seen corresponding path program 1 times [2020-09-25 07:50:06,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:06,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773146438] [2020-09-25 07:50:06,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 07:50:07,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:50:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-25 07:50:07,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:07,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:50:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:50:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:07,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:07,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:07,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:07,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:07,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:07,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:07,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:07,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:07,238 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 07:50:07,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773146438] [2020-09-25 07:50:07,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:07,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:07,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510980830] [2020-09-25 07:50:07,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:07,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:07,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:07,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:07,242 INFO L87 Difference]: Start difference. First operand 154 states and 163 transitions. Second operand 4 states. [2020-09-25 07:50:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:07,467 INFO L93 Difference]: Finished difference Result 196 states and 209 transitions. [2020-09-25 07:50:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:50:07,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-25 07:50:07,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:07,469 INFO L225 Difference]: With dead ends: 196 [2020-09-25 07:50:07,469 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 07:50:07,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 07:50:07,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 156. [2020-09-25 07:50:07,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-25 07:50:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2020-09-25 07:50:07,478 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 41 [2020-09-25 07:50:07,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:07,479 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2020-09-25 07:50:07,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:07,480 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2020-09-25 07:50:07,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 07:50:07,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:07,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:07,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:50:07,487 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:07,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:07,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1043090602, now seen corresponding path program 1 times [2020-09-25 07:50:07,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:07,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487698850] [2020-09-25 07:50:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:07,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:08,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 07:50:08,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:50:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-09-25 07:50:08,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:08,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:50:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:50:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:08,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:08,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:08,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:08,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:08,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:08,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:08,332 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 07:50:08,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487698850] [2020-09-25 07:50:08,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:08,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:08,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225560296] [2020-09-25 07:50:08,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:08,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:08,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:08,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:08,335 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand 4 states. [2020-09-25 07:50:08,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:08,551 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-09-25 07:50:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:50:08,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 07:50:08,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:08,553 INFO L225 Difference]: With dead ends: 156 [2020-09-25 07:50:08,553 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 07:50:08,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:08,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 07:50:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-25 07:50:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 07:50:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2020-09-25 07:50:08,561 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 43 [2020-09-25 07:50:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:08,562 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2020-09-25 07:50:08,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:08,562 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2020-09-25 07:50:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 07:50:08,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:08,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:08,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:50:08,564 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:08,564 INFO L82 PathProgramCache]: Analyzing trace with hash -2027132131, now seen corresponding path program 1 times [2020-09-25 07:50:08,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:08,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798959361] [2020-09-25 07:50:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:09,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:09,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:50:09,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:50:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-09-25 07:50:09,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:09,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:50:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:50:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:09,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:09,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:09,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:09,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:09,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:09,507 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 07:50:09,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798959361] [2020-09-25 07:50:09,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:09,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:50:09,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377115444] [2020-09-25 07:50:09,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:50:09,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:09,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:50:09,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:50:09,515 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand 7 states. [2020-09-25 07:50:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:10,052 INFO L93 Difference]: Finished difference Result 346 states and 371 transitions. [2020-09-25 07:50:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:50:10,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-25 07:50:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:10,055 INFO L225 Difference]: With dead ends: 346 [2020-09-25 07:50:10,056 INFO L226 Difference]: Without dead ends: 279 [2020-09-25 07:50:10,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:50:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-25 07:50:10,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 178. [2020-09-25 07:50:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 07:50:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 190 transitions. [2020-09-25 07:50:10,066 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 190 transitions. Word has length 47 [2020-09-25 07:50:10,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:10,066 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 190 transitions. [2020-09-25 07:50:10,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:50:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 190 transitions. [2020-09-25 07:50:10,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 07:50:10,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:10,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:10,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:50:10,068 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:10,069 INFO L82 PathProgramCache]: Analyzing trace with hash -917146302, now seen corresponding path program 1 times [2020-09-25 07:50:10,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:10,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120742572] [2020-09-25 07:50:10,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:10,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:10,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:10,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:11,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:11,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 07:50:11,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:50:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1648 [2020-09-25 07:50:11,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:11,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 07:50:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:50:11,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:11,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:11,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:11,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:11,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:11,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:11,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:50:11,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:11,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:11,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:11,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120742572] [2020-09-25 07:50:11,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:11,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:11,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922179069] [2020-09-25 07:50:11,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:11,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:11,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:11,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:11,798 INFO L87 Difference]: Start difference. First operand 178 states and 190 transitions. Second operand 4 states. [2020-09-25 07:50:12,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:12,164 INFO L93 Difference]: Finished difference Result 190 states and 203 transitions. [2020-09-25 07:50:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:50:12,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-25 07:50:12,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:12,167 INFO L225 Difference]: With dead ends: 190 [2020-09-25 07:50:12,167 INFO L226 Difference]: Without dead ends: 188 [2020-09-25 07:50:12,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-25 07:50:12,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 176. [2020-09-25 07:50:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 07:50:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2020-09-25 07:50:12,179 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 52 [2020-09-25 07:50:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:12,181 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2020-09-25 07:50:12,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2020-09-25 07:50:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 07:50:12,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:12,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:12,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:50:12,183 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:12,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-09-25 07:50:12,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:12,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744700776] [2020-09-25 07:50:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:12,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:14,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:15,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:15,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:50:15,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:50:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3081 [2020-09-25 07:50:15,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:15,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:50:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 07:50:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:15,690 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-09-25 07:50:15,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:15,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:15,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:15,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:15,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:15,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:15,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:15,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:15,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:15,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:15,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:15,897 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 07:50:15,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744700776] [2020-09-25 07:50:15,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:15,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 07:50:15,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745903509] [2020-09-25 07:50:15,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 07:50:15,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:15,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 07:50:15,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:50:15,901 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 14 states. [2020-09-25 07:50:18,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:18,559 INFO L93 Difference]: Finished difference Result 597 states and 636 transitions. [2020-09-25 07:50:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 07:50:18,560 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-25 07:50:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:18,566 INFO L225 Difference]: With dead ends: 597 [2020-09-25 07:50:18,566 INFO L226 Difference]: Without dead ends: 594 [2020-09-25 07:50:18,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 07:50:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-09-25 07:50:18,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 196. [2020-09-25 07:50:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 07:50:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 211 transitions. [2020-09-25 07:50:18,601 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 211 transitions. Word has length 54 [2020-09-25 07:50:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:18,601 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 211 transitions. [2020-09-25 07:50:18,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 07:50:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 211 transitions. [2020-09-25 07:50:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 07:50:18,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:18,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:18,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:50:18,603 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash -772128015, now seen corresponding path program 1 times [2020-09-25 07:50:18,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:18,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738685115] [2020-09-25 07:50:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:19,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:19,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:50:19,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:50:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-09-25 07:50:19,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:19,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 07:50:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:50:19,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:19,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:19,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:19,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:19,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:19,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:19,569 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 07:50:19,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738685115] [2020-09-25 07:50:19,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:19,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:19,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376306915] [2020-09-25 07:50:19,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:19,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:19,571 INFO L87 Difference]: Start difference. First operand 196 states and 211 transitions. Second operand 4 states. [2020-09-25 07:50:19,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:19,769 INFO L93 Difference]: Finished difference Result 202 states and 217 transitions. [2020-09-25 07:50:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:50:19,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 07:50:19,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:19,771 INFO L225 Difference]: With dead ends: 202 [2020-09-25 07:50:19,771 INFO L226 Difference]: Without dead ends: 197 [2020-09-25 07:50:19,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-25 07:50:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-09-25 07:50:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 07:50:19,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2020-09-25 07:50:19,786 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 54 [2020-09-25 07:50:19,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:19,786 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2020-09-25 07:50:19,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2020-09-25 07:50:19,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 07:50:19,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:19,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:19,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 07:50:19,789 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:19,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:19,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1827485623, now seen corresponding path program 1 times [2020-09-25 07:50:19,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:19,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112786301] [2020-09-25 07:50:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:19,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:21,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:21,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 07:50:21,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:50:21,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-09-25 07:50:21,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:21,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:50:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:50:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:21,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:22,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:22,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:22,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:22,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:22,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:22,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:22,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112786301] [2020-09-25 07:50:22,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:22,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:50:22,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222419355] [2020-09-25 07:50:22,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:50:22,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:22,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:50:22,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:50:22,018 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand 6 states. [2020-09-25 07:50:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:22,446 INFO L93 Difference]: Finished difference Result 278 states and 299 transitions. [2020-09-25 07:50:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:50:22,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-25 07:50:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:22,448 INFO L225 Difference]: With dead ends: 278 [2020-09-25 07:50:22,448 INFO L226 Difference]: Without dead ends: 250 [2020-09-25 07:50:22,449 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 07:50:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-25 07:50:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 231. [2020-09-25 07:50:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-25 07:50:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 253 transitions. [2020-09-25 07:50:22,464 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 253 transitions. Word has length 56 [2020-09-25 07:50:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:22,464 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 253 transitions. [2020-09-25 07:50:22,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:50:22,465 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 253 transitions. [2020-09-25 07:50:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 07:50:22,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:22,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:22,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 07:50:22,466 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:22,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:22,466 INFO L82 PathProgramCache]: Analyzing trace with hash -82626834, now seen corresponding path program 1 times [2020-09-25 07:50:22,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:22,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828484302] [2020-09-25 07:50:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:23,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:23,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 07:50:23,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:50:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-09-25 07:50:23,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:23,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:23,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:23,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 07:50:23,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:50:23,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:23,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:23,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:23,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:23,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:23,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:23,515 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 07:50:23,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828484302] [2020-09-25 07:50:23,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:23,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:50:23,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234001164] [2020-09-25 07:50:23,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:50:23,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:23,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:50:23,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:50:23,517 INFO L87 Difference]: Start difference. First operand 231 states and 253 transitions. Second operand 6 states. [2020-09-25 07:50:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:23,900 INFO L93 Difference]: Finished difference Result 257 states and 281 transitions. [2020-09-25 07:50:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:50:23,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-25 07:50:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:23,903 INFO L225 Difference]: With dead ends: 257 [2020-09-25 07:50:23,903 INFO L226 Difference]: Without dead ends: 252 [2020-09-25 07:50:23,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-25 07:50:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 236. [2020-09-25 07:50:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-25 07:50:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 259 transitions. [2020-09-25 07:50:23,923 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 259 transitions. Word has length 56 [2020-09-25 07:50:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:23,924 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 259 transitions. [2020-09-25 07:50:23,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:50:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 259 transitions. [2020-09-25 07:50:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 07:50:23,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:23,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:23,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 07:50:23,925 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-09-25 07:50:23,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:23,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170337201] [2020-09-25 07:50:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:50:23,950 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:50:23,951 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:50:23,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 07:50:23,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:50:23 BoogieIcfgContainer [2020-09-25 07:50:23,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:50:23,993 INFO L168 Benchmark]: Toolchain (without parser) took 29309.97 ms. Allocated memory was 140.0 MB in the beginning and 440.4 MB in the end (delta: 300.4 MB). Free memory was 101.8 MB in the beginning and 131.4 MB in the end (delta: -29.6 MB). Peak memory consumption was 270.9 MB. Max. memory is 7.1 GB. [2020-09-25 07:50:23,994 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:50:23,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.61 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.2 MB in the beginning and 171.4 MB in the end (delta: -70.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-25 07:50:23,997 INFO L168 Benchmark]: Boogie Preprocessor took 86.09 ms. Allocated memory is still 203.9 MB. Free memory was 171.4 MB in the beginning and 167.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:50:24,002 INFO L168 Benchmark]: RCFGBuilder took 935.88 ms. Allocated memory is still 203.9 MB. Free memory was 167.9 MB in the beginning and 104.6 MB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:50:24,005 INFO L168 Benchmark]: TraceAbstraction took 27570.46 ms. Allocated memory was 203.9 MB in the beginning and 440.4 MB in the end (delta: 236.5 MB). Free memory was 103.9 MB in the beginning and 131.4 MB in the end (delta: -27.4 MB). Peak memory consumption was 209.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:50:24,014 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.61 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.2 MB in the beginning and 171.4 MB in the end (delta: -70.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.09 ms. Allocated memory is still 203.9 MB. Free memory was 171.4 MB in the beginning and 167.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 935.88 ms. Allocated memory is still 203.9 MB. Free memory was 167.9 MB in the beginning and 104.6 MB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27570.46 ms. Allocated memory was 203.9 MB in the beginning and 440.4 MB in the end (delta: 236.5 MB). Free memory was 103.9 MB in the beginning and 131.4 MB in the end (delta: -27.4 MB). Peak memory consumption was 209.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.4s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2341 SDtfs, 2894 SDslu, 6125 SDs, 0 SdLazy, 4388 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 955 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 633 NumberOfCodeBlocks, 633 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 561 ConstructedInterpolants, 0 QuantifiedInterpolants, 163293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...