/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:24:07,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:24:07,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:24:07,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:24:07,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:24:07,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:24:07,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:24:07,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:24:07,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:24:07,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:24:07,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:24:07,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:24:07,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:24:07,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:24:07,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:24:07,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:24:07,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:24:07,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:24:07,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:24:07,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:24:07,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:24:07,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:24:07,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:24:07,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:24:07,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:24:07,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:24:07,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:24:07,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:24:07,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:24:07,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:24:07,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:24:07,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:24:07,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:24:07,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:24:07,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:24:07,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:24:07,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:24:07,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:24:07,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:24:07,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:24:07,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:24:07,714 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 [2020-09-21 11:24:07,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:24:07,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:24:07,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:24:07,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:24:07,743 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:24:07,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:24:07,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:24:07,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:24:07,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:24:07,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:24:07,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:24:07,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:24:07,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:24:07,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:24:07,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:24:07,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:24:07,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:24:07,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:24:07,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:24:07,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:24:07,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:24:07,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:24:07,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:24:07,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:24:07,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:24:07,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:24:07,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:24:07,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:24:07,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:24:07,748 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:24:08,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:24:08,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:24:08,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:24:08,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:24:08,275 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:24:08,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-21 11:24:08,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/004e05de9/6eed9219019444b39b638de898e73952/FLAG0f1528893 [2020-09-21 11:24:09,012 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:24:09,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-21 11:24:09,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/004e05de9/6eed9219019444b39b638de898e73952/FLAG0f1528893 [2020-09-21 11:24:09,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/004e05de9/6eed9219019444b39b638de898e73952 [2020-09-21 11:24:09,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:24:09,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:24:09,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:09,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:24:09,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:24:09,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:09" (1/1) ... [2020-09-21 11:24:09,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fdab4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:09, skipping insertion in model container [2020-09-21 11:24:09,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:09" (1/1) ... [2020-09-21 11:24:09,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:24:09,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:24:09,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:09,946 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:24:10,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:10,105 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:24:10,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10 WrapperNode [2020-09-21 11:24:10,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:10,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:24:10,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:24:10,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:24:10,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10" (1/1) ... [2020-09-21 11:24:10,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10" (1/1) ... [2020-09-21 11:24:10,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10" (1/1) ... [2020-09-21 11:24:10,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10" (1/1) ... [2020-09-21 11:24:10,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10" (1/1) ... [2020-09-21 11:24:10,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10" (1/1) ... [2020-09-21 11:24:10,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10" (1/1) ... [2020-09-21 11:24:10,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:24:10,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:24:10,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:24:10,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:24:10,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10" (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 [2020-09-21 11:24:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:24:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:24:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 11:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 11:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 11:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 11:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 11:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 11:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 11:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 11:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 11:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 11:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 11:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 11:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 11:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 11:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 11:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 11:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 11:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 11:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 11:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 11:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 11:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 11:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 11:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 11:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 11:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 11:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 11:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 11:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 11:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 11:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 11:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 11:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 11:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 11:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 11:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 11:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 11:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 11:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 11:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 11:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 11:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 11:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 11:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 11:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 11:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 11:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 11:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 11:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 11:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 11:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 11:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 11:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 11:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 11:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 11:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 11:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 11:24:10,280 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 11:24:10,280 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 11:24:10,280 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 11:24:10,280 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 11:24:10,280 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 11:24:10,280 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 11:24:10,281 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 11:24:10,281 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 11:24:10,281 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 11:24:10,281 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 11:24:10,281 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 11:24:10,281 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 11:24:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 11:24:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 11:24:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 11:24:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 11:24:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 11:24:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 11:24:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 11:24:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 11:24:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 11:24:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 11:24:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 11:24:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 11:24:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 11:24:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 11:24:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 11:24:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 11:24:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 11:24:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 11:24:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 11:24:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 11:24:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 11:24:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 11:24:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 11:24:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 11:24:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 11:24:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 11:24:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 11:24:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 11:24:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 11:24:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 11:24:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:24:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:24:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:24:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:24:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:24:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:24:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:24:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:24:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:24:11,003 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:24:11,003 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-21 11:24:11,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:11 BoogieIcfgContainer [2020-09-21 11:24:11,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:24:11,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:24:11,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:24:11,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:24:11,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:24:09" (1/3) ... [2020-09-21 11:24:11,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c391475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:11, skipping insertion in model container [2020-09-21 11:24:11,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:10" (2/3) ... [2020-09-21 11:24:11,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c391475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:11, skipping insertion in model container [2020-09-21 11:24:11,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:11" (3/3) ... [2020-09-21 11:24:11,019 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-21 11:24:11,030 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:24:11,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-21 11:24:11,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-21 11:24:11,090 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:24:11,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:24:11,091 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:24:11,091 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:24:11,091 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:24:11,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:24:11,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:24:11,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:24:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-21 11:24:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-21 11:24:11,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:11,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:11,131 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]=== [2020-09-21 11:24:11,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:11,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-09-21 11:24:11,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:11,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343802874] [2020-09-21 11:24:11,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:11,329 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:11,329 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:11,329 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:11,330 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:11,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:24:11,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:24:11,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:24:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:11,429 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:11,430 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:11,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:11,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:11,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:11,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:11,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:11,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:11,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343802874] [2020-09-21 11:24:11,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:11,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:11,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413233207] [2020-09-21 11:24:11,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:11,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:11,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:11,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:11,497 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-09-21 11:24:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:11,796 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-09-21 11:24:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:11,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-21 11:24:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:11,815 INFO L225 Difference]: With dead ends: 186 [2020-09-21 11:24:11,815 INFO L226 Difference]: Without dead ends: 99 [2020-09-21 11:24:11,821 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 [2020-09-21 11:24:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-21 11:24:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-09-21 11:24:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-21 11:24:11,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-09-21 11:24:11,883 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-09-21 11:24:11,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:11,883 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-09-21 11:24:11,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:11,884 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-09-21 11:24:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:24:11,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:11,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:11,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:24:11,886 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]=== [2020-09-21 11:24:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:11,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-09-21 11:24:11,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:11,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980801214] [2020-09-21 11:24:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:11,921 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:11,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:11,922 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:11,922 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:11,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:24:11,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:11,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:24:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:24:11,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:11,966 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:11,966 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:11,966 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:11,967 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:11,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:11,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:11,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:11,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980801214] [2020-09-21 11:24:11,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:11,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:11,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504094435] [2020-09-21 11:24:11,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:11,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:11,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:11,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:11,980 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-09-21 11:24:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:12,162 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-09-21 11:24:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:12,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 11:24:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:12,165 INFO L225 Difference]: With dead ends: 84 [2020-09-21 11:24:12,165 INFO L226 Difference]: Without dead ends: 82 [2020-09-21 11:24:12,166 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 [2020-09-21 11:24:12,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-21 11:24:12,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-21 11:24:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-21 11:24:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-09-21 11:24:12,178 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-09-21 11:24:12,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:12,179 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-09-21 11:24:12,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:12,179 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-09-21 11:24:12,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:24:12,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:12,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:12,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:24:12,181 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]=== [2020-09-21 11:24:12,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:12,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-09-21 11:24:12,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:12,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987785249] [2020-09-21 11:24:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:12,214 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:12,214 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:12,215 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:12,215 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:12,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:24:12,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:24:12,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:24:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:12,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:12,273 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:12,274 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:12,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:12,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:12,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:12,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:12,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987785249] [2020-09-21 11:24:12,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:12,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:12,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262518294] [2020-09-21 11:24:12,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:12,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:12,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:12,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:12,284 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-09-21 11:24:12,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:12,557 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-09-21 11:24:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:24:12,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:24:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:12,559 INFO L225 Difference]: With dead ends: 138 [2020-09-21 11:24:12,559 INFO L226 Difference]: Without dead ends: 136 [2020-09-21 11:24:12,560 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 [2020-09-21 11:24:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-21 11:24:12,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-09-21 11:24:12,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-21 11:24:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-09-21 11:24:12,573 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-09-21 11:24:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:12,573 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-09-21 11:24:12,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-09-21 11:24:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:24:12,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:12,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:12,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:24:12,575 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]=== [2020-09-21 11:24:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:12,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-09-21 11:24:12,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:12,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011106968] [2020-09-21 11:24:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:12,651 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:12,651 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:12,651 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:12,652 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:12,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:24:12,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:24:12,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:24:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:12,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:12,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:12,716 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:12,717 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:12,717 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:12,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:12,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:12,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:12,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:12,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:12,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011106968] [2020-09-21 11:24:12,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:12,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:12,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241976207] [2020-09-21 11:24:12,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:12,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:12,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:12,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:12,728 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-09-21 11:24:12,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:12,934 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-09-21 11:24:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:24:12,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:24:12,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:12,936 INFO L225 Difference]: With dead ends: 84 [2020-09-21 11:24:12,936 INFO L226 Difference]: Without dead ends: 82 [2020-09-21 11:24:12,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:12,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-21 11:24:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-09-21 11:24:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-21 11:24:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-09-21 11:24:12,944 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-09-21 11:24:12,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:12,944 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-09-21 11:24:12,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-09-21 11:24:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:24:12,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:12,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:12,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:24:12,946 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]=== [2020-09-21 11:24:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:12,947 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-09-21 11:24:12,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:12,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884131315] [2020-09-21 11:24:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:12,974 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:12,974 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:12,974 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:12,975 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:12,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:24:12,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:24:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:13,018 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:13,018 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:13,018 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:13,019 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:13,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:13,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:13,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:13,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:13,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884131315] [2020-09-21 11:24:13,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:13,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:13,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346009382] [2020-09-21 11:24:13,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:13,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:13,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:13,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:13,027 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-09-21 11:24:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:13,259 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-09-21 11:24:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:24:13,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-21 11:24:13,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:13,261 INFO L225 Difference]: With dead ends: 199 [2020-09-21 11:24:13,262 INFO L226 Difference]: Without dead ends: 132 [2020-09-21 11:24:13,263 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 [2020-09-21 11:24:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-21 11:24:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-09-21 11:24:13,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-21 11:24:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-09-21 11:24:13,273 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-09-21 11:24:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:13,273 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-09-21 11:24:13,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-09-21 11:24:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:24:13,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:13,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:13,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:24:13,275 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]=== [2020-09-21 11:24:13,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:13,275 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-09-21 11:24:13,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:13,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945638898] [2020-09-21 11:24:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:13,319 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:24:13,319 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -11 [2020-09-21 11:24:13,319 FATAL L256 erpolLogProxyWrapper]: Difference in width: 11 [2020-09-21 11:24:13,320 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:13,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:24:13,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:24:13,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:24:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:24:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:13,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:13,364 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:13,364 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:13,364 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:13,364 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:13,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:13,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:13,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:13,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:13,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:13,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945638898] [2020-09-21 11:24:13,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:13,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:13,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623857107] [2020-09-21 11:24:13,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:13,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:13,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:13,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:13,373 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-09-21 11:24:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:13,524 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-09-21 11:24:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:13,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 11:24:13,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:13,526 INFO L225 Difference]: With dead ends: 84 [2020-09-21 11:24:13,526 INFO L226 Difference]: Without dead ends: 80 [2020-09-21 11:24:13,527 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 [2020-09-21 11:24:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-21 11:24:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-09-21 11:24:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-21 11:24:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-09-21 11:24:13,535 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-09-21 11:24:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:13,535 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-09-21 11:24:13,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-09-21 11:24:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:24:13,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:13,537 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] [2020-09-21 11:24:13,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:24:13,537 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]=== [2020-09-21 11:24:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:13,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-09-21 11:24:13,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:13,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007601775] [2020-09-21 11:24:13,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:13,570 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:24:13,570 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:13,570 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:13,571 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:24:13,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:24:13,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:24:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:13,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:13,648 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:13,648 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:13,648 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:13,648 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:13,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:13,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:13,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:13,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:13,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007601775] [2020-09-21 11:24:13,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:13,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:13,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196197463] [2020-09-21 11:24:13,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:13,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:13,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:13,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:13,660 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-09-21 11:24:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:13,866 INFO L93 Difference]: Finished difference Result 110 states and 124 transitions. [2020-09-21 11:24:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:24:13,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 11:24:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:13,871 INFO L225 Difference]: With dead ends: 110 [2020-09-21 11:24:13,872 INFO L226 Difference]: Without dead ends: 90 [2020-09-21 11:24:13,872 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 [2020-09-21 11:24:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-21 11:24:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 74. [2020-09-21 11:24:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-21 11:24:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-09-21 11:24:13,879 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 20 [2020-09-21 11:24:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:13,880 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-09-21 11:24:13,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-09-21 11:24:13,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:24:13,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:13,881 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] [2020-09-21 11:24:13,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:24:13,881 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]=== [2020-09-21 11:24:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:13,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-09-21 11:24:13,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:13,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245411748] [2020-09-21 11:24:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:13,899 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:13,900 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:13,900 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:13,900 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:13,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:24:13,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:13,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:24:13,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 11:24:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:13,930 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:13,931 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:13,931 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:13,931 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:13,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:13,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:13,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:13,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:13,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:13,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245411748] [2020-09-21 11:24:13,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:13,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:13,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747767548] [2020-09-21 11:24:13,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:13,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:13,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:13,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:13,938 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2020-09-21 11:24:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:14,064 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-09-21 11:24:14,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:14,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-21 11:24:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:14,066 INFO L225 Difference]: With dead ends: 135 [2020-09-21 11:24:14,066 INFO L226 Difference]: Without dead ends: 96 [2020-09-21 11:24:14,067 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 [2020-09-21 11:24:14,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-21 11:24:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2020-09-21 11:24:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-21 11:24:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-09-21 11:24:14,075 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 24 [2020-09-21 11:24:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:14,075 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-09-21 11:24:14,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-09-21 11:24:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:24:14,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:14,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:14,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:24:14,077 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]=== [2020-09-21 11:24:14,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:14,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-09-21 11:24:14,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:14,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429736009] [2020-09-21 11:24:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:14,094 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:14,094 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:14,095 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:14,095 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:14,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:24:14,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:14,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:14,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 11:24:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:14,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:14,125 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:14,125 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:14,125 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:14,126 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:14,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:14,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:14,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:14,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:14,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:14,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429736009] [2020-09-21 11:24:14,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:14,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:14,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503737495] [2020-09-21 11:24:14,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:14,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:14,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:14,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:14,133 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 4 states. [2020-09-21 11:24:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:14,280 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-09-21 11:24:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:24:14,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 11:24:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:14,282 INFO L225 Difference]: With dead ends: 77 [2020-09-21 11:24:14,282 INFO L226 Difference]: Without dead ends: 75 [2020-09-21 11:24:14,283 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 [2020-09-21 11:24:14,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-21 11:24:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-21 11:24:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-21 11:24:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-09-21 11:24:14,288 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 25 [2020-09-21 11:24:14,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:14,288 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-09-21 11:24:14,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-09-21 11:24:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:24:14,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:14,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:14,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:24:14,290 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]=== [2020-09-21 11:24:14,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:14,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-09-21 11:24:14,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:14,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276690722] [2020-09-21 11:24:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:14,314 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:14,315 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:14,315 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:14,315 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:14,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:24:14,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:24:14,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 11:24:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:24:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:14,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:14,360 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:14,361 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:14,361 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:14,361 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:14,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:14,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:14,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:14,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:14,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276690722] [2020-09-21 11:24:14,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:14,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:14,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421378710] [2020-09-21 11:24:14,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:14,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:14,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:14,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:14,368 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 5 states. [2020-09-21 11:24:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:14,501 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-09-21 11:24:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:24:14,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-21 11:24:14,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:14,503 INFO L225 Difference]: With dead ends: 76 [2020-09-21 11:24:14,503 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 11:24:14,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 11:24:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-09-21 11:24:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-21 11:24:14,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2020-09-21 11:24:14,509 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 27 [2020-09-21 11:24:14,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:14,509 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2020-09-21 11:24:14,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2020-09-21 11:24:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:24:14,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:14,511 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] [2020-09-21 11:24:14,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:24:14,511 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]=== [2020-09-21 11:24:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:14,511 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-09-21 11:24:14,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:14,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217458174] [2020-09-21 11:24:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:14,537 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:14,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:14,538 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:14,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:14,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:24:14,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:24:14,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:24:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:24:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:14,602 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:14,602 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:14,602 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:14,602 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:14,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:14,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:14,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217458174] [2020-09-21 11:24:14,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:14,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:24:14,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955810677] [2020-09-21 11:24:14,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:24:14,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:14,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:24:14,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:24:14,626 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 6 states. [2020-09-21 11:24:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:15,009 INFO L93 Difference]: Finished difference Result 173 states and 197 transitions. [2020-09-21 11:24:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:24:15,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-21 11:24:15,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:15,012 INFO L225 Difference]: With dead ends: 173 [2020-09-21 11:24:15,012 INFO L226 Difference]: Without dead ends: 133 [2020-09-21 11:24:15,013 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 [2020-09-21 11:24:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-21 11:24:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 83. [2020-09-21 11:24:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-21 11:24:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-09-21 11:24:15,027 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 28 [2020-09-21 11:24:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:15,027 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-09-21 11:24:15,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:24:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-09-21 11:24:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:24:15,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:15,029 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] [2020-09-21 11:24:15,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:24:15,029 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]=== [2020-09-21 11:24:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:15,032 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-09-21 11:24:15,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:15,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592939026] [2020-09-21 11:24:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:15,216 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:24:15,216 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-21 11:24:15,217 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-21 11:24:15,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:24:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-21 11:24:15,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:24:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:15,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:15,554 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:15,554 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:15,554 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:15,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:15,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:15,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:15,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592939026] [2020-09-21 11:24:15,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:15,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:24:15,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706951467] [2020-09-21 11:24:15,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:24:15,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:15,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:24:15,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:24:15,569 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 8 states. [2020-09-21 11:24:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:16,180 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2020-09-21 11:24:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:24:16,180 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-21 11:24:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:16,182 INFO L225 Difference]: With dead ends: 152 [2020-09-21 11:24:16,182 INFO L226 Difference]: Without dead ends: 150 [2020-09-21 11:24:16,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:24:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-21 11:24:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 102. [2020-09-21 11:24:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-21 11:24:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2020-09-21 11:24:16,210 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 28 [2020-09-21 11:24:16,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:16,211 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2020-09-21 11:24:16,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:24:16,211 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2020-09-21 11:24:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:24:16,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:16,219 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] [2020-09-21 11:24:16,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:24:16,221 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]=== [2020-09-21 11:24:16,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:16,221 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-09-21 11:24:16,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:16,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344949659] [2020-09-21 11:24:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:24:16,258 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:24:16,258 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:24:16,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:24:16,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:24:16 BoogieIcfgContainer [2020-09-21 11:24:16,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:24:16,302 INFO L168 Benchmark]: Toolchain (without parser) took 7019.41 ms. Allocated memory was 140.5 MB in the beginning and 283.1 MB in the end (delta: 142.6 MB). Free memory was 102.5 MB in the beginning and 243.2 MB in the end (delta: -140.7 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:16,304 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:24:16,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 823.88 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 173.0 MB in the end (delta: -71.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:16,306 INFO L168 Benchmark]: Boogie Preprocessor took 85.24 ms. Allocated memory is still 205.5 MB. Free memory was 173.0 MB in the beginning and 169.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:16,307 INFO L168 Benchmark]: RCFGBuilder took 816.19 ms. Allocated memory is still 205.5 MB. Free memory was 169.1 MB in the beginning and 113.5 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:16,316 INFO L168 Benchmark]: TraceAbstraction took 5284.29 ms. Allocated memory was 205.5 MB in the beginning and 283.1 MB in the end (delta: 77.6 MB). Free memory was 113.5 MB in the beginning and 243.2 MB in the end (delta: -129.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:24:16,322 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 823.88 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 173.0 MB in the end (delta: -71.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.24 ms. Allocated memory is still 205.5 MB. Free memory was 173.0 MB in the beginning and 169.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 816.19 ms. Allocated memory is still 205.5 MB. Free memory was 169.1 MB in the beginning and 113.5 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5284.29 ms. Allocated memory was 205.5 MB in the beginning and 283.1 MB in the end (delta: 77.6 MB). Free memory was 113.5 MB in the beginning and 243.2 MB in the end (delta: -129.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 878 SDtfs, 629 SDslu, 1080 SDs, 0 SdLazy, 1493 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 261 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 37703 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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...