/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:07:32,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:07:32,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:07:32,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:07:32,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:07:32,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:07:32,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:07:32,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:07:32,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:07:32,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:07:32,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:07:32,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:07:32,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:07:32,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:07:32,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:07:32,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:07:32,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:07:32,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:07:32,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:07:32,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:07:32,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:07:32,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:07:32,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:07:32,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:07:32,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:07:32,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:07:32,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:07:32,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:07:32,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:07:32,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:07:32,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:07:32,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:07:32,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:07:32,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:07:32,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:07:32,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:07:32,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:07:32,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:07:32,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:07:32,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:07:32,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:07:32,174 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 02:07:32,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:07:32,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:07:32,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:07:32,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:07:32,228 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:07:32,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:07:32,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:07:32,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:07:32,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:07:32,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:07:32,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:07:32,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:07:32,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:07:32,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:07:32,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:07:32,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:07:32,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:07:32,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:07:32,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:07:32,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:07:32,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:07:32,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:07:32,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:07:32,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:07:32,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:07:32,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:07:32,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:07:32,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:07:32,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:07:32,234 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:07:32,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:07:32,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:07:32,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:07:32,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:07:32,726 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:07:32,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-25 02:07:32,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/facde2101/36a4ee79d807421bb57efa06dae94c74/FLAG706730ed4 [2020-09-25 02:07:33,435 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:07:33,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-25 02:07:33,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/facde2101/36a4ee79d807421bb57efa06dae94c74/FLAG706730ed4 [2020-09-25 02:07:33,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/facde2101/36a4ee79d807421bb57efa06dae94c74 [2020-09-25 02:07:33,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:07:33,731 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:07:33,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:33,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:07:33,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:07:33,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7701fc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33, skipping insertion in model container [2020-09-25 02:07:33,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:07:33,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:07:34,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:34,329 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:07:34,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:34,437 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:07:34,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34 WrapperNode [2020-09-25 02:07:34,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:34,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:07:34,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:07:34,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:07:34,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34" (1/1) ... [2020-09-25 02:07:34,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34" (1/1) ... [2020-09-25 02:07:34,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34" (1/1) ... [2020-09-25 02:07:34,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34" (1/1) ... [2020-09-25 02:07:34,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34" (1/1) ... [2020-09-25 02:07:34,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34" (1/1) ... [2020-09-25 02:07:34,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34" (1/1) ... [2020-09-25 02:07:34,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:07:34,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:07:34,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:07:34,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:07:34,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34" (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 02:07:34,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:07:34,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:07:34,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:07:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 02:07:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 02:07:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 02:07:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 02:07:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 02:07:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 02:07:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 02:07:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 02:07:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 02:07:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 02:07:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 02:07:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 02:07:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 02:07:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 02:07:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 02:07:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 02:07:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 02:07:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 02:07:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 02:07:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 02:07:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 02:07:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 02:07:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 02:07:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 02:07:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 02:07:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 02:07:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 02:07:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 02:07:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 02:07:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 02:07:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 02:07:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 02:07:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 02:07:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 02:07:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 02:07:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 02:07:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 02:07:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 02:07:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 02:07:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 02:07:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 02:07:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 02:07:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 02:07:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 02:07:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 02:07:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 02:07:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 02:07:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 02:07:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 02:07:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 02:07:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:07:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:07:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 02:07:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:07:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 02:07:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 02:07:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 02:07:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 02:07:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 02:07:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:07:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 02:07:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 02:07:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 02:07:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:07:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 02:07:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 02:07:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 02:07:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 02:07:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 02:07:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 02:07:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 02:07:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 02:07:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 02:07:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 02:07:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 02:07:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 02:07:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 02:07:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 02:07:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 02:07:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 02:07:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 02:07:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 02:07:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 02:07:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 02:07:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 02:07:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 02:07:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 02:07:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 02:07:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 02:07:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 02:07:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 02:07:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 02:07:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 02:07:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 02:07:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 02:07:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 02:07:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 02:07:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 02:07:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 02:07:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 02:07:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 02:07:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 02:07:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 02:07:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:07:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:07:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:07:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:07:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:07:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:07:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:07:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:07:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:07:35,415 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:07:35,416 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-25 02:07:35,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:35 BoogieIcfgContainer [2020-09-25 02:07:35,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:07:35,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:07:35,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:07:35,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:07:35,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:07:33" (1/3) ... [2020-09-25 02:07:35,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c6eabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:35, skipping insertion in model container [2020-09-25 02:07:35,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:34" (2/3) ... [2020-09-25 02:07:35,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c6eabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:35, skipping insertion in model container [2020-09-25 02:07:35,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:35" (3/3) ... [2020-09-25 02:07:35,433 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-25 02:07:35,445 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:07:35,456 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-25 02:07:35,480 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-25 02:07:35,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:07:35,513 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:07:35,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:07:35,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:07:35,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:07:35,514 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:07:35,514 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:07:35,514 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:07:35,543 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-25 02:07:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 02:07:35,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:35,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:35,552 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 02:07:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:35,559 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-09-25 02:07:35,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:35,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788719028] [2020-09-25 02:07:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:35,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 02:07:35,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:35,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 02:07:35,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:07:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:07:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:07:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:07:36,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:36,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:36,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:36,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:36,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:07:36,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:36,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:36,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:36,053 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 02:07:36,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788719028] [2020-09-25 02:07:36,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:36,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:07:36,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476325232] [2020-09-25 02:07:36,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:07:36,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:36,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:07:36,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:07:36,093 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-25 02:07:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:36,552 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-09-25 02:07:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:07:36,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-25 02:07:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:36,573 INFO L225 Difference]: With dead ends: 360 [2020-09-25 02:07:36,573 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 02:07:36,580 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 02:07:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 02:07:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-25 02:07:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 02:07:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-09-25 02:07:36,680 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-09-25 02:07:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:36,680 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-09-25 02:07:36,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:07:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-09-25 02:07:36,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 02:07:36,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:36,683 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] [2020-09-25 02:07:36,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:07:36,683 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 02:07:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:36,685 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-09-25 02:07:36,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:36,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626927705] [2020-09-25 02:07:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:36,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:37,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:37,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:07:37,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:37,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 02:07:37,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:07:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 02:07:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 02:07:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:37,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:37,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:37,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:07:37,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:37,136 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 02:07:37,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626927705] [2020-09-25 02:07:37,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:37,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:07:37,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467878949] [2020-09-25 02:07:37,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:07:37,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:37,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:07:37,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:07:37,141 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-09-25 02:07:37,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:37,425 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-09-25 02:07:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:07:37,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-25 02:07:37,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:37,428 INFO L225 Difference]: With dead ends: 170 [2020-09-25 02:07:37,428 INFO L226 Difference]: Without dead ends: 165 [2020-09-25 02:07:37,430 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 02:07:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-25 02:07:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-25 02:07:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-25 02:07:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-09-25 02:07:37,444 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-09-25 02:07:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:37,445 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-09-25 02:07:37,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:07:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-09-25 02:07:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 02:07:37,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:37,446 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] [2020-09-25 02:07:37,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:07:37,447 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 02:07:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:37,448 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-09-25 02:07:37,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:37,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591531113] [2020-09-25 02:07:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:37,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:37,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:07:37,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:37,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 02:07:37,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:07:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:07:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:07:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:37,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:37,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:37,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:37,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:37,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:07:37,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:37,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:37,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:37,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:37,843 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 02:07:37,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591531113] [2020-09-25 02:07:37,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:37,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:07:37,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702427950] [2020-09-25 02:07:37,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:07:37,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:37,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:07:37,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:07:37,846 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-09-25 02:07:38,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:38,342 INFO L93 Difference]: Finished difference Result 258 states and 275 transitions. [2020-09-25 02:07:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:07:38,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-25 02:07:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:38,345 INFO L225 Difference]: With dead ends: 258 [2020-09-25 02:07:38,345 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 02:07:38,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:07:38,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 02:07:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 159. [2020-09-25 02:07:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 02:07:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-09-25 02:07:38,357 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-09-25 02:07:38,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:38,358 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-09-25 02:07:38,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:07:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-09-25 02:07:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 02:07:38,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:38,360 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] [2020-09-25 02:07:38,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:07:38,360 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 02:07:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:38,361 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-09-25 02:07:38,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:38,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782883691] [2020-09-25 02:07:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:38,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:38,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:38,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 02:07:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:07:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-25 02:07:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:07:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:07:38,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:39,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:39,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:07:39,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:39,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:39,049 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 02:07:39,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782883691] [2020-09-25 02:07:39,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:39,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:07:39,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569504819] [2020-09-25 02:07:39,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:07:39,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:39,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:07:39,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:07:39,055 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-09-25 02:07:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:39,500 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-09-25 02:07:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:07:39,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-09-25 02:07:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:39,503 INFO L225 Difference]: With dead ends: 382 [2020-09-25 02:07:39,503 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 02:07:39,506 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 02:07:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 02:07:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-09-25 02:07:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 02:07:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-09-25 02:07:39,529 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-09-25 02:07:39,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:39,529 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-09-25 02:07:39,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:07:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-09-25 02:07:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:07:39,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:39,531 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 02:07:39,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:07:39,532 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 02:07:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:39,534 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-09-25 02:07:39,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:39,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285492790] [2020-09-25 02:07:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:39,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:39,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:39,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:07:39,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:39,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 02:07:39,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:07:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 02:07:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 02:07:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:39,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:39,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:39,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:07:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:39,859 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 02:07:39,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285492790] [2020-09-25 02:07:39,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:39,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:07:39,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375608884] [2020-09-25 02:07:39,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:07:39,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:07:39,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:07:39,862 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 5 states. [2020-09-25 02:07:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:40,173 INFO L93 Difference]: Finished difference Result 192 states and 205 transitions. [2020-09-25 02:07:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:07:40,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 02:07:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:40,175 INFO L225 Difference]: With dead ends: 192 [2020-09-25 02:07:40,175 INFO L226 Difference]: Without dead ends: 158 [2020-09-25 02:07:40,176 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 02:07:40,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-25 02:07:40,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-09-25 02:07:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 02:07:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-25 02:07:40,194 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 34 [2020-09-25 02:07:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:40,199 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-25 02:07:40,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:07:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-25 02:07:40,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 02:07:40,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:40,203 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] [2020-09-25 02:07:40,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:07:40,203 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 02:07:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:40,204 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-09-25 02:07:40,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:40,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901032639] [2020-09-25 02:07:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:40,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:40,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:07:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 02:07:40,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:07:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 02:07:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:07:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:40,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:40,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:40,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:40,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:40,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:40,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:07:40,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:40,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:40,516 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 02:07:40,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901032639] [2020-09-25 02:07:40,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:40,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:07:40,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004890224] [2020-09-25 02:07:40,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:07:40,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:40,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:07:40,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:07:40,519 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 7 states. [2020-09-25 02:07:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:41,122 INFO L93 Difference]: Finished difference Result 239 states and 255 transitions. [2020-09-25 02:07:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:07:41,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 02:07:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:41,124 INFO L225 Difference]: With dead ends: 239 [2020-09-25 02:07:41,124 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 02:07:41,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:07:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 02:07:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 155. [2020-09-25 02:07:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 02:07:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2020-09-25 02:07:41,132 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 38 [2020-09-25 02:07:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:41,133 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2020-09-25 02:07:41,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:07:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2020-09-25 02:07:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 02:07:41,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:41,135 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] [2020-09-25 02:07:41,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:07:41,135 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 02:07:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:41,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-09-25 02:07:41,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:41,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057209065] [2020-09-25 02:07:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:41,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:41,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:07:41,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 02:07:41,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:07:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 02:07:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:07:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:41,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:41,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:41,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:41,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:41,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:07:41,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:41,272 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 02:07:41,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057209065] [2020-09-25 02:07:41,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:41,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:07:41,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852297187] [2020-09-25 02:07:41,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:07:41,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:41,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:07:41,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:07:41,275 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 4 states. [2020-09-25 02:07:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:41,481 INFO L93 Difference]: Finished difference Result 195 states and 209 transitions. [2020-09-25 02:07:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:07:41,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-25 02:07:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:41,483 INFO L225 Difference]: With dead ends: 195 [2020-09-25 02:07:41,483 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 02:07:41,483 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 02:07:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 02:07:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 157. [2020-09-25 02:07:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 02:07:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2020-09-25 02:07:41,490 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 42 [2020-09-25 02:07:41,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:41,491 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2020-09-25 02:07:41,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:07:41,491 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2020-09-25 02:07:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 02:07:41,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:41,492 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] [2020-09-25 02:07:41,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:07:41,493 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 02:07:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:41,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-09-25 02:07:41,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:41,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737062288] [2020-09-25 02:07:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:42,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:42,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:07:42,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:07:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-09-25 02:07:42,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:07:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:07:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:07:42,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:42,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:42,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:42,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:42,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:07:42,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:42,306 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 02:07:42,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737062288] [2020-09-25 02:07:42,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:42,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:07:42,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771946964] [2020-09-25 02:07:42,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:07:42,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:42,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:07:42,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:07:42,308 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand 4 states. [2020-09-25 02:07:42,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:42,532 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-09-25 02:07:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:07:42,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-25 02:07:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:42,534 INFO L225 Difference]: With dead ends: 157 [2020-09-25 02:07:42,534 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 02:07:42,534 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 02:07:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 02:07:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-25 02:07:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 02:07:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-25 02:07:42,541 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 44 [2020-09-25 02:07:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:42,542 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-25 02:07:42,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:07:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-25 02:07:42,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 02:07:42,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:42,544 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] [2020-09-25 02:07:42,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:07:42,544 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 02:07:42,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:42,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-09-25 02:07:42,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:42,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332438464] [2020-09-25 02:07:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:42,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:42,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:44,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:44,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:07:44,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:07:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2175 [2020-09-25 02:07:44,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:07:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 02:07:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:07:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:44,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:44,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:44,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:44,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:07:44,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:44,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:44,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:44,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:44,878 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 02:07:44,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332438464] [2020-09-25 02:07:44,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:44,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 02:07:44,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579789135] [2020-09-25 02:07:44,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:07:44,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:44,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:07:44,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:07:44,880 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 9 states. [2020-09-25 02:07:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:45,463 INFO L93 Difference]: Finished difference Result 349 states and 376 transitions. [2020-09-25 02:07:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:07:45,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-25 02:07:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:45,466 INFO L225 Difference]: With dead ends: 349 [2020-09-25 02:07:45,466 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 02:07:45,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:07:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 02:07:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 174. [2020-09-25 02:07:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 02:07:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2020-09-25 02:07:45,475 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 48 [2020-09-25 02:07:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:45,476 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2020-09-25 02:07:45,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:07:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2020-09-25 02:07:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:07:45,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:45,477 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 02:07:45,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:07:45,478 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 02:07:45,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:45,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-09-25 02:07:45,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:45,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512728195] [2020-09-25 02:07:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:45,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:45,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:45,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 02:07:45,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 02:07:45,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:07:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 02:07:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 02:07:45,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:45,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:45,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:45,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:45,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:45,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:07:45,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:45,735 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 02:07:45,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512728195] [2020-09-25 02:07:45,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:45,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:07:45,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786641169] [2020-09-25 02:07:45,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:07:45,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:45,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:07:45,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:07:45,739 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand 4 states. [2020-09-25 02:07:46,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:46,012 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2020-09-25 02:07:46,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:07:46,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-25 02:07:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:46,015 INFO L225 Difference]: With dead ends: 180 [2020-09-25 02:07:46,015 INFO L226 Difference]: Without dead ends: 175 [2020-09-25 02:07:46,015 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 02:07:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-25 02:07:46,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-09-25 02:07:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-25 02:07:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 187 transitions. [2020-09-25 02:07:46,023 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 187 transitions. Word has length 52 [2020-09-25 02:07:46,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:46,024 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 187 transitions. [2020-09-25 02:07:46,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:07:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 187 transitions. [2020-09-25 02:07:46,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 02:07:46,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:46,026 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] [2020-09-25 02:07:46,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:07:46,026 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 02:07:46,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:46,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-09-25 02:07:46,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:46,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495365051] [2020-09-25 02:07:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:46,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:46,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:49,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:49,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:07:49,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:07:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3050 [2020-09-25 02:07:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:07:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 02:07:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:07:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:49,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:49,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:49,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:07:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:49,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:49,415 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 02:07:49,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495365051] [2020-09-25 02:07:49,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:49,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 02:07:49,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596698426] [2020-09-25 02:07:49,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:07:49,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:07:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:07:49,418 INFO L87 Difference]: Start difference. First operand 175 states and 187 transitions. Second operand 12 states. [2020-09-25 02:07:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:50,584 INFO L93 Difference]: Finished difference Result 451 states and 484 transitions. [2020-09-25 02:07:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 02:07:50,585 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 02:07:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:50,589 INFO L225 Difference]: With dead ends: 451 [2020-09-25 02:07:50,589 INFO L226 Difference]: Without dead ends: 448 [2020-09-25 02:07:50,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:07:50,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-09-25 02:07:50,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 195. [2020-09-25 02:07:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-25 02:07:50,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 210 transitions. [2020-09-25 02:07:50,607 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 210 transitions. Word has length 53 [2020-09-25 02:07:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:50,608 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 210 transitions. [2020-09-25 02:07:50,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:07:50,608 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 210 transitions. [2020-09-25 02:07:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 02:07:50,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:50,609 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 02:07:50,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:07:50,609 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 02:07:50,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:50,610 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-09-25 02:07:50,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:50,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137481535] [2020-09-25 02:07:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:50,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:50,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:50,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:07:50,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:50,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 02:07:50,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:07:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 02:07:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:07:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:51,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:51,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:51,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:51,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:51,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:07:51,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:51,018 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 02:07:51,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137481535] [2020-09-25 02:07:51,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:51,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:07:51,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169852846] [2020-09-25 02:07:51,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:07:51,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:51,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:07:51,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:07:51,021 INFO L87 Difference]: Start difference. First operand 195 states and 210 transitions. Second operand 8 states. [2020-09-25 02:07:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:51,497 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2020-09-25 02:07:51,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:07:51,498 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-25 02:07:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:51,500 INFO L225 Difference]: With dead ends: 215 [2020-09-25 02:07:51,501 INFO L226 Difference]: Without dead ends: 210 [2020-09-25 02:07:51,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:07:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-25 02:07:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 189. [2020-09-25 02:07:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-09-25 02:07:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2020-09-25 02:07:51,510 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 54 [2020-09-25 02:07:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:51,511 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2020-09-25 02:07:51,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:07:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2020-09-25 02:07:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 02:07:51,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:51,512 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] [2020-09-25 02:07:51,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:07:51,512 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 02:07:51,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:51,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-09-25 02:07:51,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:51,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525372629] [2020-09-25 02:07:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:52,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:52,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:55,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:55,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 02:07:55,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:07:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4069 [2020-09-25 02:07:55,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:07:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 02:07:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:07:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:56,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:56,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:56,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:07:56,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:56,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:56,190 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 02:07:56,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525372629] [2020-09-25 02:07:56,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:56,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 02:07:56,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093670114] [2020-09-25 02:07:56,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:07:56,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:56,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:07:56,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:07:56,193 INFO L87 Difference]: Start difference. First operand 189 states and 204 transitions. Second operand 12 states. [2020-09-25 02:07:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:57,591 INFO L93 Difference]: Finished difference Result 442 states and 475 transitions. [2020-09-25 02:07:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 02:07:57,591 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-25 02:07:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:57,594 INFO L225 Difference]: With dead ends: 442 [2020-09-25 02:07:57,594 INFO L226 Difference]: Without dead ends: 439 [2020-09-25 02:07:57,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 02:07:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-25 02:07:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 193. [2020-09-25 02:07:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-25 02:07:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2020-09-25 02:07:57,624 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 57 [2020-09-25 02:07:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:57,624 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2020-09-25 02:07:57,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:07:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2020-09-25 02:07:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 02:07:57,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:57,626 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] [2020-09-25 02:07:57,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 02:07:57,626 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 02:07:57,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:57,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1845748070, now seen corresponding path program 1 times [2020-09-25 02:07:57,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:57,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38765049] [2020-09-25 02:07:57,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:57,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:57,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:57,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:57,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:00,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:00,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 02:08:00,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:08:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3271 [2020-09-25 02:08:00,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:08:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 02:08:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:08:00,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:01,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:01,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:01,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:08:01,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:01,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:01,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38765049] [2020-09-25 02:08:01,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:01,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:08:01,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437809371] [2020-09-25 02:08:01,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:08:01,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:01,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:08:01,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:08:01,085 INFO L87 Difference]: Start difference. First operand 193 states and 208 transitions. Second operand 9 states. [2020-09-25 02:08:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:02,074 INFO L93 Difference]: Finished difference Result 449 states and 486 transitions. [2020-09-25 02:08:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 02:08:02,077 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-25 02:08:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:02,079 INFO L225 Difference]: With dead ends: 449 [2020-09-25 02:08:02,079 INFO L226 Difference]: Without dead ends: 380 [2020-09-25 02:08:02,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:08:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-25 02:08:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 271. [2020-09-25 02:08:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-25 02:08:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 298 transitions. [2020-09-25 02:08:02,096 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 298 transitions. Word has length 57 [2020-09-25 02:08:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:02,097 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 298 transitions. [2020-09-25 02:08:02,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:08:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 298 transitions. [2020-09-25 02:08:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 02:08:02,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:02,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:02,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 02:08:02,099 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 02:08:02,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:02,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-09-25 02:08:02,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:02,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914837732] [2020-09-25 02:08:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:02,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 02:08:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 02:08:02,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:08:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:08:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 02:08:02,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:02,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:02,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:02,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:02,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:02,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:02,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:02,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:02,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914837732] [2020-09-25 02:08:02,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:02,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:08:02,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138500101] [2020-09-25 02:08:02,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:08:02,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:02,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:08:02,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:08:02,402 INFO L87 Difference]: Start difference. First operand 271 states and 298 transitions. Second operand 7 states. [2020-09-25 02:08:02,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:02,945 INFO L93 Difference]: Finished difference Result 471 states and 519 transitions. [2020-09-25 02:08:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:08:02,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-25 02:08:02,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:02,948 INFO L225 Difference]: With dead ends: 471 [2020-09-25 02:08:02,949 INFO L226 Difference]: Without dead ends: 364 [2020-09-25 02:08:02,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:08:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-09-25 02:08:02,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 317. [2020-09-25 02:08:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-09-25 02:08:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 351 transitions. [2020-09-25 02:08:02,964 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 351 transitions. Word has length 59 [2020-09-25 02:08:02,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:02,964 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 351 transitions. [2020-09-25 02:08:02,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:08:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 351 transitions. [2020-09-25 02:08:02,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 02:08:02,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:02,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:02,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 02:08:02,966 INFO L427 AbstractCegarLoop]: === Iteration 16 === [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 02:08:02,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:02,966 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-09-25 02:08:02,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:02,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209466008] [2020-09-25 02:08:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:02,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:03,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:03,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:08:03,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:08:03,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 02:08:03,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:03,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:08:03,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 02:08:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:08:03,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:03,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:03,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:03,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:03,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:03,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:03,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:03,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:03,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:03,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209466008] [2020-09-25 02:08:03,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:08:03,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:08:03,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419384426] [2020-09-25 02:08:03,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:08:03,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:03,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:08:03,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:08:03,179 INFO L87 Difference]: Start difference. First operand 317 states and 351 transitions. Second operand 4 states. [2020-09-25 02:08:03,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:03,480 INFO L93 Difference]: Finished difference Result 569 states and 642 transitions. [2020-09-25 02:08:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:08:03,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 02:08:03,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:03,483 INFO L225 Difference]: With dead ends: 569 [2020-09-25 02:08:03,483 INFO L226 Difference]: Without dead ends: 435 [2020-09-25 02:08:03,484 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 02:08:03,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-09-25 02:08:03,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 374. [2020-09-25 02:08:03,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-09-25 02:08:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 417 transitions. [2020-09-25 02:08:03,500 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 417 transitions. Word has length 64 [2020-09-25 02:08:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:03,500 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 417 transitions. [2020-09-25 02:08:03,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:08:03,500 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 417 transitions. [2020-09-25 02:08:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 02:08:03,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:03,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:03,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 02:08:03,502 INFO L427 AbstractCegarLoop]: === Iteration 17 === [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 02:08:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:03,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1878952235, now seen corresponding path program 1 times [2020-09-25 02:08:03,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:03,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451352947] [2020-09-25 02:08:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:03,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:03,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:08:03,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 02:08:03,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:08:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 02:08:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:08:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:03,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:03,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:03,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:03,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:03,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451352947] [2020-09-25 02:08:03,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:08:03,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:08:03,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472773134] [2020-09-25 02:08:03,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:08:03,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:03,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:08:03,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:08:03,638 INFO L87 Difference]: Start difference. First operand 374 states and 417 transitions. Second operand 4 states. [2020-09-25 02:08:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:03,838 INFO L93 Difference]: Finished difference Result 606 states and 683 transitions. [2020-09-25 02:08:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:08:03,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 02:08:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:03,841 INFO L225 Difference]: With dead ends: 606 [2020-09-25 02:08:03,841 INFO L226 Difference]: Without dead ends: 414 [2020-09-25 02:08:03,842 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 02:08:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-09-25 02:08:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 367. [2020-09-25 02:08:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-09-25 02:08:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 409 transitions. [2020-09-25 02:08:03,859 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 409 transitions. Word has length 64 [2020-09-25 02:08:03,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:03,859 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 409 transitions. [2020-09-25 02:08:03,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:08:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 409 transitions. [2020-09-25 02:08:03,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 02:08:03,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:03,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:03,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 02:08:03,861 INFO L427 AbstractCegarLoop]: === Iteration 18 === [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 02:08:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:03,861 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-09-25 02:08:03,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:03,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184701985] [2020-09-25 02:08:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:03,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:04,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:04,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:08:04,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:08:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-09-25 02:08:04,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:04,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:08:04,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 02:08:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:08:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:04,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:04,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:04,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:04,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:04,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:04,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:04,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:04,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:04,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:04,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184701985] [2020-09-25 02:08:04,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:04,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:08:04,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406024856] [2020-09-25 02:08:04,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:08:04,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:04,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:08:04,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:08:04,664 INFO L87 Difference]: Start difference. First operand 367 states and 409 transitions. Second operand 10 states. [2020-09-25 02:08:05,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:05,283 INFO L93 Difference]: Finished difference Result 608 states and 674 transitions. [2020-09-25 02:08:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:08:05,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 02:08:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:05,287 INFO L225 Difference]: With dead ends: 608 [2020-09-25 02:08:05,287 INFO L226 Difference]: Without dead ends: 548 [2020-09-25 02:08:05,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:08:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-09-25 02:08:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 414. [2020-09-25 02:08:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-09-25 02:08:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 464 transitions. [2020-09-25 02:08:05,311 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 464 transitions. Word has length 67 [2020-09-25 02:08:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:05,311 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 464 transitions. [2020-09-25 02:08:05,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:08:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 464 transitions. [2020-09-25 02:08:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 02:08:05,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:05,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:05,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 02:08:05,314 INFO L427 AbstractCegarLoop]: === Iteration 19 === [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 02:08:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-09-25 02:08:05,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:05,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696612274] [2020-09-25 02:08:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:08:05,339 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:08:05,339 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:08:05,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 02:08:05,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:08:05 BoogieIcfgContainer [2020-09-25 02:08:05,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:08:05,378 INFO L168 Benchmark]: Toolchain (without parser) took 31651.00 ms. Allocated memory was 146.3 MB in the beginning and 438.3 MB in the end (delta: 292.0 MB). Free memory was 99.7 MB in the beginning and 226.2 MB in the end (delta: -126.5 MB). Peak memory consumption was 165.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:08:05,379 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:08:05,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.62 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 99.0 MB in the beginning and 169.7 MB in the end (delta: -70.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-25 02:08:05,380 INFO L168 Benchmark]: Boogie Preprocessor took 90.36 ms. Allocated memory is still 203.4 MB. Free memory was 169.7 MB in the beginning and 165.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:08:05,381 INFO L168 Benchmark]: RCFGBuilder took 893.51 ms. Allocated memory is still 203.4 MB. Free memory was 165.7 MB in the beginning and 102.9 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:08:05,382 INFO L168 Benchmark]: TraceAbstraction took 29950.17 ms. Allocated memory was 203.4 MB in the beginning and 438.3 MB in the end (delta: 234.9 MB). Free memory was 102.9 MB in the beginning and 226.2 MB in the end (delta: -123.2 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:08:05,385 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.62 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 99.0 MB in the beginning and 169.7 MB in the end (delta: -70.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.36 ms. Allocated memory is still 203.4 MB. Free memory was 169.7 MB in the beginning and 165.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 893.51 ms. Allocated memory is still 203.4 MB. Free memory was 165.7 MB in the beginning and 102.9 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29950.17 ms. Allocated memory was 203.4 MB in the beginning and 438.3 MB in the end (delta: 234.9 MB). Free memory was 102.9 MB in the beginning and 226.2 MB in the end (delta: -123.2 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.8s, OverallIterations: 19, TraceHistogramMax: 2, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2928 SDtfs, 3786 SDslu, 8241 SDs, 0 SdLazy, 5898 SolverSat, 142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 1358 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 900 NumberOfCodeBlocks, 900 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 809 ConstructedInterpolants, 0 QuantifiedInterpolants, 283941 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 11/15 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...