/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=SHALLOWEST --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 [2020-09-24 23:52:09,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:52:09,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:52:09,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:52:09,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:52:09,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:52:09,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:52:09,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:52:09,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:52:09,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:52:09,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:52:09,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:52:09,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:52:09,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:52:09,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:52:09,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:52:09,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:52:09,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:52:09,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:52:09,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:52:09,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:52:09,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:52:09,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:52:09,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:52:09,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:52:09,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:52:09,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:52:09,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:52:09,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:52:09,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:52:09,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:52:09,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:52:09,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:52:09,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:52:09,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:52:09,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:52:09,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:52:09,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:52:09,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:52:09,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:52:09,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:52:09,728 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 [2020-09-24 23:52:09,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:52:09,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:52:09,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:52:09,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:52:09,772 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:52:09,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:52:09,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:52:09,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:52:09,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:52:09,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:52:09,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:52:09,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:52:09,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:52:09,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:52:09,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:52:09,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:52:09,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:52:09,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:52:09,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:52:09,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:52:09,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:52:09,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:52:09,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:52:09,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:52:09,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:52:09,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:52:09,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:52:09,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:52:09,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:52:09,778 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:52:10,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:52:10,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:52:10,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:52:10,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:52:10,303 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:52:10,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 23:52:10,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6a62d9e6/496fdddf75384414a0825b1fff86383d/FLAG1d986da13 [2020-09-24 23:52:10,965 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:52:10,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 23:52:10,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6a62d9e6/496fdddf75384414a0825b1fff86383d/FLAG1d986da13 [2020-09-24 23:52:11,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6a62d9e6/496fdddf75384414a0825b1fff86383d [2020-09-24 23:52:11,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:52:11,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:52:11,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:52:11,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:52:11,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:52:11,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:52:11" (1/1) ... [2020-09-24 23:52:11,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc54d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:11, skipping insertion in model container [2020-09-24 23:52:11,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:52:11" (1/1) ... [2020-09-24 23:52:11,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:52:11,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:52:11,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:52:11,886 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:52:11,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:52:12,002 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:52:12,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12 WrapperNode [2020-09-24 23:52:12,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:52:12,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:52:12,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:52:12,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:52:12,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12" (1/1) ... [2020-09-24 23:52:12,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12" (1/1) ... [2020-09-24 23:52:12,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12" (1/1) ... [2020-09-24 23:52:12,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12" (1/1) ... [2020-09-24 23:52:12,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12" (1/1) ... [2020-09-24 23:52:12,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12" (1/1) ... [2020-09-24 23:52:12,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12" (1/1) ... [2020-09-24 23:52:12,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:52:12,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:52:12,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:52:12,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:52:12,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12" (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 [2020-09-24 23:52:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:52:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:52:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:52:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 23:52:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 23:52:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 23:52:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 23:52:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 23:52:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 23:52:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 23:52:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 23:52:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 23:52:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 23:52:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 23:52:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 23:52:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 23:52:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 23:52:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 23:52:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 23:52:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 23:52:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 23:52:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 23:52:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 23:52:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 23:52:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 23:52:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 23:52:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 23:52:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 23:52:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 23:52:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 23:52:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 23:52:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 23:52:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 23:52:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 23:52:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 23:52:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 23:52:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 23:52:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 23:52:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 23:52:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 23:52:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 23:52:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 23:52:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 23:52:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 23:52:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 23:52:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 23:52:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 23:52:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 23:52:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 23:52:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 23:52:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 23:52:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 23:52:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 23:52:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:52:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 23:52:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 23:52:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:52:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 23:52:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 23:52:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 23:52:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 23:52:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 23:52:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 23:52:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 23:52:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 23:52:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 23:52:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 23:52:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 23:52:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 23:52:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 23:52:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 23:52:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 23:52:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 23:52:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 23:52:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 23:52:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 23:52:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 23:52:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 23:52:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 23:52:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 23:52:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 23:52:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 23:52:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 23:52:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 23:52:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 23:52:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 23:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 23:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 23:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 23:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 23:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 23:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 23:52:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 23:52:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 23:52:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 23:52:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 23:52:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 23:52:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 23:52:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 23:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 23:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 23:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 23:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 23:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 23:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 23:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 23:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:52:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:52:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:52:12,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:52:12,956 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-24 23:52:12,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:52:12 BoogieIcfgContainer [2020-09-24 23:52:12,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:52:12,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:52:12,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:52:12,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:52:12,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:52:11" (1/3) ... [2020-09-24 23:52:12,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43db6d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:52:12, skipping insertion in model container [2020-09-24 23:52:12,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:12" (2/3) ... [2020-09-24 23:52:12,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43db6d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:52:12, skipping insertion in model container [2020-09-24 23:52:12,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:52:12" (3/3) ... [2020-09-24 23:52:12,974 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-24 23:52:12,987 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:52:12,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-24 23:52:13,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-24 23:52:13,058 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:52:13,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:52:13,058 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:52:13,058 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:52:13,059 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:52:13,059 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:52:13,059 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:52:13,059 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:52:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-24 23:52:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 23:52:13,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:13,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:13,101 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]=== [2020-09-24 23:52:13,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:13,110 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-09-24 23:52:13,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:13,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118953606] [2020-09-24 23:52:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:13,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:13,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:13,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 23:52:13,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:13,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-24 23:52:13,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:52:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:52:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:52:13,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:13,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:13,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:13,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:13,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:13,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 23:52:13,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:13,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:13,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:13,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:13,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:13,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118953606] [2020-09-24 23:52:13,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:13,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:52:13,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66989849] [2020-09-24 23:52:13,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:52:13,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:13,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:52:13,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:52:13,610 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-24 23:52:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:14,033 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-09-24 23:52:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:52:14,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-24 23:52:14,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:14,051 INFO L225 Difference]: With dead ends: 360 [2020-09-24 23:52:14,051 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 23:52:14,057 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 [2020-09-24 23:52:14,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 23:52:14,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-24 23:52:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 23:52:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-09-24 23:52:14,122 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-09-24 23:52:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:14,123 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-09-24 23:52:14,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:52:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-09-24 23:52:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 23:52:14,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:14,124 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] [2020-09-24 23:52:14,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:52:14,125 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]=== [2020-09-24 23:52:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-09-24 23:52:14,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:14,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845378233] [2020-09-24 23:52:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:14,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:14,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:14,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 23:52:14,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:14,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-09-24 23:52:14,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:52:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 23:52:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:52:14,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:14,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:14,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:14,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:14,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:14,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:14,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:52:14,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:14,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:14,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845378233] [2020-09-24 23:52:14,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:14,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:52:14,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168094360] [2020-09-24 23:52:14,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:52:14,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:14,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:52:14,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:52:14,577 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 6 states. [2020-09-24 23:52:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:15,078 INFO L93 Difference]: Finished difference Result 397 states and 422 transitions. [2020-09-24 23:52:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:52:15,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 23:52:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:15,082 INFO L225 Difference]: With dead ends: 397 [2020-09-24 23:52:15,082 INFO L226 Difference]: Without dead ends: 263 [2020-09-24 23:52:15,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:52:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-24 23:52:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 167. [2020-09-24 23:52:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-24 23:52:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 177 transitions. [2020-09-24 23:52:15,102 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 177 transitions. Word has length 24 [2020-09-24 23:52:15,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:15,102 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 177 transitions. [2020-09-24 23:52:15,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:52:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 177 transitions. [2020-09-24 23:52:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 23:52:15,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:15,104 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] [2020-09-24 23:52:15,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:52:15,104 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]=== [2020-09-24 23:52:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:15,105 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-09-24 23:52:15,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:15,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891634229] [2020-09-24 23:52:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:15,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:15,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:15,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:52:15,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-24 23:52:15,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:52:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 23:52:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:52:15,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:15,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:15,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:15,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:15,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:52:15,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:15,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891634229] [2020-09-24 23:52:15,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:15,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:52:15,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718935134] [2020-09-24 23:52:15,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:52:15,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:15,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:52:15,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:52:15,479 INFO L87 Difference]: Start difference. First operand 167 states and 177 transitions. Second operand 6 states. [2020-09-24 23:52:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:15,884 INFO L93 Difference]: Finished difference Result 264 states and 281 transitions. [2020-09-24 23:52:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:52:15,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-24 23:52:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:15,887 INFO L225 Difference]: With dead ends: 264 [2020-09-24 23:52:15,887 INFO L226 Difference]: Without dead ends: 259 [2020-09-24 23:52:15,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:52:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-24 23:52:15,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 170. [2020-09-24 23:52:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-24 23:52:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 180 transitions. [2020-09-24 23:52:15,900 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 180 transitions. Word has length 26 [2020-09-24 23:52:15,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:15,901 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 180 transitions. [2020-09-24 23:52:15,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:52:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 180 transitions. [2020-09-24 23:52:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 23:52:15,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:15,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:15,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:52:15,903 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]=== [2020-09-24 23:52:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:15,903 INFO L82 PathProgramCache]: Analyzing trace with hash -111525919, now seen corresponding path program 1 times [2020-09-24 23:52:15,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:15,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74398972] [2020-09-24 23:52:15,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:15,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:17,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:17,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 23:52:17,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1342 [2020-09-24 23:52:17,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:52:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:52:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:17,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:17,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:17,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:17,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:52:17,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:17,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:17,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74398972] [2020-09-24 23:52:17,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:17,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 23:52:17,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542130524] [2020-09-24 23:52:17,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:52:17,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:17,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:52:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:52:17,436 INFO L87 Difference]: Start difference. First operand 170 states and 180 transitions. Second operand 12 states. [2020-09-24 23:52:18,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:18,757 INFO L93 Difference]: Finished difference Result 546 states and 579 transitions. [2020-09-24 23:52:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 23:52:18,758 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-09-24 23:52:18,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:18,761 INFO L225 Difference]: With dead ends: 546 [2020-09-24 23:52:18,761 INFO L226 Difference]: Without dead ends: 410 [2020-09-24 23:52:18,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-09-24 23:52:18,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-09-24 23:52:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 162. [2020-09-24 23:52:18,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 23:52:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-09-24 23:52:18,774 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2020-09-24 23:52:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:18,775 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-09-24 23:52:18,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 23:52:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-09-24 23:52:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 23:52:18,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:18,777 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] [2020-09-24 23:52:18,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:52:18,777 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]=== [2020-09-24 23:52:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-09-24 23:52:18,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:18,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630822645] [2020-09-24 23:52:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:18,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:18,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 23:52:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-24 23:52:18,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:52:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:52:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:19,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:19,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:19,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:19,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:19,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:52:19,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:19,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:19,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630822645] [2020-09-24 23:52:19,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:19,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:52:19,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649569721] [2020-09-24 23:52:19,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:52:19,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:19,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:52:19,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:52:19,061 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 6 states. [2020-09-24 23:52:19,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:19,469 INFO L93 Difference]: Finished difference Result 271 states and 287 transitions. [2020-09-24 23:52:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:52:19,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-24 23:52:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:19,473 INFO L225 Difference]: With dead ends: 271 [2020-09-24 23:52:19,473 INFO L226 Difference]: Without dead ends: 239 [2020-09-24 23:52:19,474 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 [2020-09-24 23:52:19,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-24 23:52:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-09-24 23:52:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 23:52:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-09-24 23:52:19,493 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 34 [2020-09-24 23:52:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:19,493 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-09-24 23:52:19,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:52:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-09-24 23:52:19,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 23:52:19,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:19,496 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] [2020-09-24 23:52:19,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:52:19,497 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]=== [2020-09-24 23:52:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:19,498 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-09-24 23:52:19,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:19,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142995551] [2020-09-24 23:52:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:19,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:19,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:52:19,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:19,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 23:52:19,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:19,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:52:19,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 23:52:19,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:52:19,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:19,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:19,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:19,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:19,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:19,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:19,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:52:19,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:19,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:19,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:19,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142995551] [2020-09-24 23:52:19,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:19,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 23:52:19,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428916904] [2020-09-24 23:52:19,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:52:19,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:19,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:52:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:52:19,786 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 7 states. [2020-09-24 23:52:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:20,377 INFO L93 Difference]: Finished difference Result 245 states and 260 transitions. [2020-09-24 23:52:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:52:20,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 23:52:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:20,382 INFO L225 Difference]: With dead ends: 245 [2020-09-24 23:52:20,382 INFO L226 Difference]: Without dead ends: 241 [2020-09-24 23:52:20,383 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 [2020-09-24 23:52:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-24 23:52:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-09-24 23:52:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 23:52:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2020-09-24 23:52:20,390 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 38 [2020-09-24 23:52:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:20,392 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2020-09-24 23:52:20,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:52:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2020-09-24 23:52:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 23:52:20,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:20,395 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] [2020-09-24 23:52:20,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:52:20,395 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]=== [2020-09-24 23:52:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-09-24 23:52:20,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:20,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640943028] [2020-09-24 23:52:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:20,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:20,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:20,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 23:52:20,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:20,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 23:52:20,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:52:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 23:52:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:52:20,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:20,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:20,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:20,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:20,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 23:52:20,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:52:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:20,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640943028] [2020-09-24 23:52:20,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:20,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:52:20,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582773955] [2020-09-24 23:52:20,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:52:20,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:20,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:52:20,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:52:20,542 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand 4 states. [2020-09-24 23:52:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:20,788 INFO L93 Difference]: Finished difference Result 199 states and 212 transitions. [2020-09-24 23:52:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:52:20,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-24 23:52:20,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:20,790 INFO L225 Difference]: With dead ends: 199 [2020-09-24 23:52:20,790 INFO L226 Difference]: Without dead ends: 197 [2020-09-24 23:52:20,790 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 [2020-09-24 23:52:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-24 23:52:20,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-09-24 23:52:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 23:52:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-09-24 23:52:20,798 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 42 [2020-09-24 23:52:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:20,798 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-09-24 23:52:20,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:52:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-09-24 23:52:20,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 23:52:20,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:20,800 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] [2020-09-24 23:52:20,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:52:20,800 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]=== [2020-09-24 23:52:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:20,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-09-24 23:52:20,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:20,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108041316] [2020-09-24 23:52:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:20,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:21,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:21,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 23:52:21,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:52:21,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-09-24 23:52:21,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:52:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 23:52:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 23:52:21,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:21,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:21,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:21,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:52:21,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:21,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108041316] [2020-09-24 23:52:21,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:21,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 23:52:21,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371883976] [2020-09-24 23:52:21,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:52:21,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:21,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:52:21,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:52:21,704 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 7 states. [2020-09-24 23:52:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:22,258 INFO L93 Difference]: Finished difference Result 358 states and 384 transitions. [2020-09-24 23:52:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 23:52:22,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-09-24 23:52:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:22,262 INFO L225 Difference]: With dead ends: 358 [2020-09-24 23:52:22,262 INFO L226 Difference]: Without dead ends: 285 [2020-09-24 23:52:22,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:52:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-09-24 23:52:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 178. [2020-09-24 23:52:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-24 23:52:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 189 transitions. [2020-09-24 23:52:22,274 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 189 transitions. Word has length 44 [2020-09-24 23:52:22,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:22,274 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 189 transitions. [2020-09-24 23:52:22,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:52:22,275 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 189 transitions. [2020-09-24 23:52:22,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 23:52:22,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:22,282 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] [2020-09-24 23:52:22,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:52:22,282 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]=== [2020-09-24 23:52:22,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:22,283 INFO L82 PathProgramCache]: Analyzing trace with hash -992267866, now seen corresponding path program 1 times [2020-09-24 23:52:22,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:22,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696928131] [2020-09-24 23:52:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:22,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:22,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:22,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:23,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:23,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:52:23,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:52:23,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-09-24 23:52:23,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:52:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 23:52:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:23,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:52:23,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:23,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:23,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696928131] [2020-09-24 23:52:23,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:23,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 23:52:23,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777304654] [2020-09-24 23:52:23,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:52:23,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:23,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:52:23,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:52:23,987 INFO L87 Difference]: Start difference. First operand 178 states and 189 transitions. Second operand 13 states. [2020-09-24 23:52:25,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:25,252 INFO L93 Difference]: Finished difference Result 554 states and 594 transitions. [2020-09-24 23:52:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 23:52:25,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-09-24 23:52:25,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:25,256 INFO L225 Difference]: With dead ends: 554 [2020-09-24 23:52:25,256 INFO L226 Difference]: Without dead ends: 481 [2020-09-24 23:52:25,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-24 23:52:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-09-24 23:52:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 195. [2020-09-24 23:52:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 23:52:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 208 transitions. [2020-09-24 23:52:25,269 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 208 transitions. Word has length 49 [2020-09-24 23:52:25,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:25,269 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 208 transitions. [2020-09-24 23:52:25,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:52:25,269 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 208 transitions. [2020-09-24 23:52:25,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 23:52:25,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:25,271 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] [2020-09-24 23:52:25,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 23:52:25,271 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]=== [2020-09-24 23:52:25,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:25,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-09-24 23:52:25,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:25,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877789964] [2020-09-24 23:52:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:25,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:25,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:25,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:25,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 23:52:25,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 23:52:25,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:52:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 23:52:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:52:25,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:25,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:25,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:25,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:52:25,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:25,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877789964] [2020-09-24 23:52:25,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:25,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:52:25,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090655982] [2020-09-24 23:52:25,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:52:25,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:25,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:52:25,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:52:25,548 INFO L87 Difference]: Start difference. First operand 195 states and 208 transitions. Second operand 6 states. [2020-09-24 23:52:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:25,940 INFO L93 Difference]: Finished difference Result 339 states and 363 transitions. [2020-09-24 23:52:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:52:25,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-24 23:52:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:25,943 INFO L225 Difference]: With dead ends: 339 [2020-09-24 23:52:25,943 INFO L226 Difference]: Without dead ends: 219 [2020-09-24 23:52:25,944 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 [2020-09-24 23:52:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-24 23:52:25,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 198. [2020-09-24 23:52:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-24 23:52:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 211 transitions. [2020-09-24 23:52:25,954 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 211 transitions. Word has length 52 [2020-09-24 23:52:25,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:25,954 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 211 transitions. [2020-09-24 23:52:25,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:52:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 211 transitions. [2020-09-24 23:52:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 23:52:25,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:25,956 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] [2020-09-24 23:52:25,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 23:52:25,956 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]=== [2020-09-24 23:52:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:25,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-09-24 23:52:25,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:25,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267668087] [2020-09-24 23:52:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:26,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:26,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:26,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:28,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:28,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 23:52:28,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:52:28,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2804 [2020-09-24 23:52:28,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:52:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 23:52:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:29,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:29,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:29,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:29,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:29,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:52:29,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:29,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267668087] [2020-09-24 23:52:29,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:29,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 23:52:29,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403872333] [2020-09-24 23:52:29,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:52:29,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:52:29,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:52:29,344 INFO L87 Difference]: Start difference. First operand 198 states and 211 transitions. Second operand 14 states. [2020-09-24 23:52:30,391 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 23:52:30,526 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-24 23:52:30,956 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 23:52:31,616 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-09-24 23:52:32,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:32,217 INFO L93 Difference]: Finished difference Result 683 states and 729 transitions. [2020-09-24 23:52:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 23:52:32,218 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-24 23:52:32,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:32,226 INFO L225 Difference]: With dead ends: 683 [2020-09-24 23:52:32,226 INFO L226 Difference]: Without dead ends: 680 [2020-09-24 23:52:32,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 23:52:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-09-24 23:52:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 201. [2020-09-24 23:52:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-24 23:52:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 214 transitions. [2020-09-24 23:52:32,242 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 214 transitions. Word has length 53 [2020-09-24 23:52:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:32,242 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 214 transitions. [2020-09-24 23:52:32,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:52:32,243 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 214 transitions. [2020-09-24 23:52:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 23:52:32,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:32,244 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] [2020-09-24 23:52:32,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 23:52:32,244 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]=== [2020-09-24 23:52:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:32,245 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-09-24 23:52:32,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:32,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192596395] [2020-09-24 23:52:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:32,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:34,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:34,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 23:52:34,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:52:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2106 [2020-09-24 23:52:34,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:52:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 23:52:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:52:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:34,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:34,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:34,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:52:34,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:34,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:52:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:52:34,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192596395] [2020-09-24 23:52:34,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:34,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:52:34,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000640429] [2020-09-24 23:52:34,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:52:34,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:34,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:52:34,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:52:34,467 INFO L87 Difference]: Start difference. First operand 201 states and 214 transitions. Second operand 6 states. [2020-09-24 23:52:34,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:34,969 INFO L93 Difference]: Finished difference Result 290 states and 310 transitions. [2020-09-24 23:52:34,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:52:34,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-24 23:52:34,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:34,971 INFO L225 Difference]: With dead ends: 290 [2020-09-24 23:52:34,972 INFO L226 Difference]: Without dead ends: 260 [2020-09-24 23:52:34,972 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 [2020-09-24 23:52:34,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-24 23:52:34,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 239. [2020-09-24 23:52:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-24 23:52:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 261 transitions. [2020-09-24 23:52:34,992 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 261 transitions. Word has length 53 [2020-09-24 23:52:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:34,992 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 261 transitions. [2020-09-24 23:52:34,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:52:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 261 transitions. [2020-09-24 23:52:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 23:52:34,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:34,993 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] [2020-09-24 23:52:34,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 23:52:34,994 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]=== [2020-09-24 23:52:34,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:34,994 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-09-24 23:52:34,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:34,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030928823] [2020-09-24 23:52:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:35,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 23:52:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-24 23:52:35,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:52:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 23:52:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:52:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:35,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:35,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:35,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:35,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:35,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:52:35,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:35,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030928823] [2020-09-24 23:52:35,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:35,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:52:35,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236638793] [2020-09-24 23:52:35,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:52:35,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:35,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:52:35,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:52:35,378 INFO L87 Difference]: Start difference. First operand 239 states and 261 transitions. Second operand 6 states. [2020-09-24 23:52:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:35,724 INFO L93 Difference]: Finished difference Result 261 states and 285 transitions. [2020-09-24 23:52:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:52:35,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-24 23:52:35,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:35,727 INFO L225 Difference]: With dead ends: 261 [2020-09-24 23:52:35,727 INFO L226 Difference]: Without dead ends: 256 [2020-09-24 23:52:35,728 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 [2020-09-24 23:52:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-24 23:52:35,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 242. [2020-09-24 23:52:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-24 23:52:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 264 transitions. [2020-09-24 23:52:35,742 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 264 transitions. Word has length 54 [2020-09-24 23:52:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:35,742 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 264 transitions. [2020-09-24 23:52:35,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:52:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 264 transitions. [2020-09-24 23:52:35,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 23:52:35,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:35,743 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] [2020-09-24 23:52:35,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 23:52:35,744 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]=== [2020-09-24 23:52:35,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:35,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1897380797, now seen corresponding path program 1 times [2020-09-24 23:52:35,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:35,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829518029] [2020-09-24 23:52:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:36,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:36,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 23:52:36,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 23:52:36,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:36,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:52:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:52:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 23:52:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:36,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:36,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:36,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:36,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:36,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:52:36,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:36,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829518029] [2020-09-24 23:52:36,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:36,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:52:36,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756506588] [2020-09-24 23:52:36,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:52:36,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:36,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:52:36,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:52:36,218 INFO L87 Difference]: Start difference. First operand 242 states and 264 transitions. Second operand 7 states. [2020-09-24 23:52:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:36,771 INFO L93 Difference]: Finished difference Result 399 states and 433 transitions. [2020-09-24 23:52:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:52:36,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-09-24 23:52:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:36,774 INFO L225 Difference]: With dead ends: 399 [2020-09-24 23:52:36,774 INFO L226 Difference]: Without dead ends: 288 [2020-09-24 23:52:36,774 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 [2020-09-24 23:52:36,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-24 23:52:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 242. [2020-09-24 23:52:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-24 23:52:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 262 transitions. [2020-09-24 23:52:36,787 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 262 transitions. Word has length 55 [2020-09-24 23:52:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:36,788 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 262 transitions. [2020-09-24 23:52:36,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:52:36,788 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 262 transitions. [2020-09-24 23:52:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 23:52:36,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:36,789 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] [2020-09-24 23:52:36,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 23:52:36,790 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]=== [2020-09-24 23:52:36,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:36,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-09-24 23:52:36,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:36,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748621148] [2020-09-24 23:52:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:37,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:37,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:40,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:40,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 23:52:40,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:52:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3585 [2020-09-24 23:52:40,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:52:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 23:52:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:40,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:40,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:40,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:40,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:40,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:52:40,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:40,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748621148] [2020-09-24 23:52:40,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:40,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 23:52:40,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567920392] [2020-09-24 23:52:40,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 23:52:40,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:40,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 23:52:40,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-24 23:52:40,867 INFO L87 Difference]: Start difference. First operand 242 states and 262 transitions. Second operand 15 states. [2020-09-24 23:52:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:42,871 INFO L93 Difference]: Finished difference Result 458 states and 485 transitions. [2020-09-24 23:52:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 23:52:42,872 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-09-24 23:52:42,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:42,876 INFO L225 Difference]: With dead ends: 458 [2020-09-24 23:52:42,876 INFO L226 Difference]: Without dead ends: 455 [2020-09-24 23:52:42,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2020-09-24 23:52:42,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-09-24 23:52:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 246. [2020-09-24 23:52:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-24 23:52:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 266 transitions. [2020-09-24 23:52:42,888 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 266 transitions. Word has length 57 [2020-09-24 23:52:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:42,888 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 266 transitions. [2020-09-24 23:52:42,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 23:52:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 266 transitions. [2020-09-24 23:52:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 23:52:42,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:42,890 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] [2020-09-24 23:52:42,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 23:52:42,890 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]=== [2020-09-24 23:52:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash -2093992957, now seen corresponding path program 1 times [2020-09-24 23:52:42,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:42,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14116999] [2020-09-24 23:52:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:43,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:44,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 23:52:44,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-09-24 23:52:44,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:52:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 23:52:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:52:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:44,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:44,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:44,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:44,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:44,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:44,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:52:44,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:44,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:44,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14116999] [2020-09-24 23:52:44,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:44,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 23:52:44,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644478120] [2020-09-24 23:52:44,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:52:44,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:44,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:52:44,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:52:44,490 INFO L87 Difference]: Start difference. First operand 246 states and 266 transitions. Second operand 14 states. [2020-09-24 23:52:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:45,672 INFO L93 Difference]: Finished difference Result 422 states and 449 transitions. [2020-09-24 23:52:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 23:52:45,672 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-09-24 23:52:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:45,674 INFO L225 Difference]: With dead ends: 422 [2020-09-24 23:52:45,674 INFO L226 Difference]: Without dead ends: 296 [2020-09-24 23:52:45,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2020-09-24 23:52:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-24 23:52:45,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 238. [2020-09-24 23:52:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-24 23:52:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 257 transitions. [2020-09-24 23:52:45,686 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 257 transitions. Word has length 61 [2020-09-24 23:52:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:45,686 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 257 transitions. [2020-09-24 23:52:45,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:52:45,686 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 257 transitions. [2020-09-24 23:52:45,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 23:52:45,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:45,687 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] [2020-09-24 23:52:45,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 23:52:45,688 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]=== [2020-09-24 23:52:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:45,688 INFO L82 PathProgramCache]: Analyzing trace with hash -30666707, now seen corresponding path program 1 times [2020-09-24 23:52:45,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:45,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631790258] [2020-09-24 23:52:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:46,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:46,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 23:52:46,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:52:46,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-09-24 23:52:46,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:52:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:52:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 23:52:46,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:46,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:46,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:46,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:46,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:46,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:52:46,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:46,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:52:46,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631790258] [2020-09-24 23:52:46,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:46,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:52:46,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484610818] [2020-09-24 23:52:46,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:52:46,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:46,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:52:46,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:52:46,707 INFO L87 Difference]: Start difference. First operand 238 states and 257 transitions. Second operand 7 states. [2020-09-24 23:52:47,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:47,120 INFO L93 Difference]: Finished difference Result 315 states and 332 transitions. [2020-09-24 23:52:47,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:52:47,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-09-24 23:52:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:47,123 INFO L225 Difference]: With dead ends: 315 [2020-09-24 23:52:47,123 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 23:52:47,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:52:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 23:52:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 229. [2020-09-24 23:52:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-24 23:52:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 249 transitions. [2020-09-24 23:52:47,135 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 249 transitions. Word has length 63 [2020-09-24 23:52:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:47,135 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 249 transitions. [2020-09-24 23:52:47,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:52:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 249 transitions. [2020-09-24 23:52:47,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 23:52:47,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:47,136 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] [2020-09-24 23:52:47,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 23:52:47,136 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]=== [2020-09-24 23:52:47,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:47,137 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-09-24 23:52:47,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:47,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751520240] [2020-09-24 23:52:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:47,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:47,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 23:52:47,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:47,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 23:52:47,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:52:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 23:52:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 23:52:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:47,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:47,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:47,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:47,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:52:47,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:47,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:47,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:47,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751520240] [2020-09-24 23:52:47,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:47,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:52:47,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147054133] [2020-09-24 23:52:47,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:52:47,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:47,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:52:47,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:52:47,343 INFO L87 Difference]: Start difference. First operand 229 states and 249 transitions. Second operand 4 states. [2020-09-24 23:52:47,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:47,642 INFO L93 Difference]: Finished difference Result 448 states and 498 transitions. [2020-09-24 23:52:47,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:52:47,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 23:52:47,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:47,644 INFO L225 Difference]: With dead ends: 448 [2020-09-24 23:52:47,645 INFO L226 Difference]: Without dead ends: 335 [2020-09-24 23:52:47,645 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 [2020-09-24 23:52:47,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-24 23:52:47,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 270. [2020-09-24 23:52:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-24 23:52:47,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 298 transitions. [2020-09-24 23:52:47,662 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 298 transitions. Word has length 64 [2020-09-24 23:52:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:47,662 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 298 transitions. [2020-09-24 23:52:47,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:52:47,662 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 298 transitions. [2020-09-24 23:52:47,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 23:52:47,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:47,663 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] [2020-09-24 23:52:47,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 23:52:47,664 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]=== [2020-09-24 23:52:47,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:47,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1878952235, now seen corresponding path program 1 times [2020-09-24 23:52:47,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:47,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343898728] [2020-09-24 23:52:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:47,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:47,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 23:52:47,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 23:52:47,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:52:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 23:52:47,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:52:47,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:47,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:47,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:47,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:47,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:52:47,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:47,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:47,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:47,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:47,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343898728] [2020-09-24 23:52:47,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:47,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:52:47,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762288713] [2020-09-24 23:52:47,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:52:47,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:47,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:52:47,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:52:47,791 INFO L87 Difference]: Start difference. First operand 270 states and 298 transitions. Second operand 4 states. [2020-09-24 23:52:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:48,041 INFO L93 Difference]: Finished difference Result 454 states and 508 transitions. [2020-09-24 23:52:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:52:48,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 23:52:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:48,043 INFO L225 Difference]: With dead ends: 454 [2020-09-24 23:52:48,043 INFO L226 Difference]: Without dead ends: 299 [2020-09-24 23:52:48,044 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 [2020-09-24 23:52:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-09-24 23:52:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 262. [2020-09-24 23:52:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-24 23:52:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 289 transitions. [2020-09-24 23:52:48,055 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 289 transitions. Word has length 64 [2020-09-24 23:52:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:48,056 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 289 transitions. [2020-09-24 23:52:48,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:52:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 289 transitions. [2020-09-24 23:52:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 23:52:48,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:48,057 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:48,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 23:52:48,058 INFO L427 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-09-24 23:52:48,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:48,058 INFO L82 PathProgramCache]: Analyzing trace with hash -594310178, now seen corresponding path program 1 times [2020-09-24 23:52:48,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:48,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3309764] [2020-09-24 23:52:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:48,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:48,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 23:52:48,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 23:52:48,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:52:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-24 23:52:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:52:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:48,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:48,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:52:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:52:48,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3309764] [2020-09-24 23:52:48,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:48,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:52:48,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433593657] [2020-09-24 23:52:48,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:52:48,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:48,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:52:48,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:52:48,191 INFO L87 Difference]: Start difference. First operand 262 states and 289 transitions. Second operand 4 states. [2020-09-24 23:52:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:48,450 INFO L93 Difference]: Finished difference Result 262 states and 289 transitions. [2020-09-24 23:52:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:52:48,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-09-24 23:52:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:48,453 INFO L225 Difference]: With dead ends: 262 [2020-09-24 23:52:48,453 INFO L226 Difference]: Without dead ends: 260 [2020-09-24 23:52:48,453 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 [2020-09-24 23:52:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-24 23:52:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2020-09-24 23:52:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-09-24 23:52:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 284 transitions. [2020-09-24 23:52:48,466 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 284 transitions. Word has length 69 [2020-09-24 23:52:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:48,466 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 284 transitions. [2020-09-24 23:52:48,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:52:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 284 transitions. [2020-09-24 23:52:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 23:52:48,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:48,468 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] [2020-09-24 23:52:48,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 23:52:48,468 INFO L427 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-09-24 23:52:48,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:48,469 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-09-24 23:52:48,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:48,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332497156] [2020-09-24 23:52:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:52:48,491 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:52:48,491 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:52:48,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 23:52:48,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:52:48 BoogieIcfgContainer [2020-09-24 23:52:48,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:52:48,539 INFO L168 Benchmark]: Toolchain (without parser) took 37287.72 ms. Allocated memory was 138.4 MB in the beginning and 529.0 MB in the end (delta: 390.6 MB). Free memory was 99.9 MB in the beginning and 128.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 362.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:52:48,539 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:52:48,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.92 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 168.9 MB in the end (delta: -69.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:52:48,541 INFO L168 Benchmark]: Boogie Preprocessor took 91.50 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 165.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:52:48,541 INFO L168 Benchmark]: RCFGBuilder took 867.92 ms. Allocated memory is still 201.9 MB. Free memory was 165.4 MB in the beginning and 102.9 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:52:48,542 INFO L168 Benchmark]: TraceAbstraction took 35571.85 ms. Allocated memory was 201.9 MB in the beginning and 529.0 MB in the end (delta: 327.2 MB). Free memory was 102.2 MB in the beginning and 128.0 MB in the end (delta: -25.8 MB). Peak memory consumption was 301.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:52:48,544 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 747.92 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 168.9 MB in the end (delta: -69.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.50 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 165.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 867.92 ms. Allocated memory is still 201.9 MB. Free memory was 165.4 MB in the beginning and 102.9 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35571.85 ms. Allocated memory was 201.9 MB in the beginning and 529.0 MB in the end (delta: 327.2 MB). Free memory was 102.2 MB in the beginning and 128.0 MB in the end (delta: -25.8 MB). Peak memory consumption was 301.3 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: 35.4s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3642 SDtfs, 5827 SDslu, 13726 SDs, 0 SdLazy, 8103 SolverSat, 262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 287 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred 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: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 2030 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 1020 NumberOfCodeBlocks, 1020 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 927 ConstructedInterpolants, 0 QuantifiedInterpolants, 388286 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 18 PerfectInterpolantSequences, 16/18 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...