/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:23,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:23,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:23,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:23,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:23,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:23,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:23,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:23,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:23,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:23,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:23,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:23,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:23,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:23,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:23,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:23,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:23,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:23,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:23,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:23,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:23,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:23,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:23,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:23,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:23,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:23,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:23,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:23,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:23,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:23,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:23,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:23,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:23,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:23,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:23,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:23,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:23,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:23,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:23,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:23,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:23,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:59:23,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:23,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:23,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:23,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:23,884 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:23,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:23,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:23,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:23,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:23,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:23,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:23,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:23,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:23,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:23,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:23,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:23,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:23,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:23,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:23,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:23,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:23,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:23,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:23,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:23,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:23,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:23,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:23,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:23,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:23,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:59:24,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:24,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:24,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:24,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:24,390 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:24,391 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 08:59:24,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e3a47b60/fda637b641e24b8b82fbbe75650b8613/FLAG16f25eb7f [2020-09-25 08:59:25,133 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:25,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 08:59:25,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e3a47b60/fda637b641e24b8b82fbbe75650b8613/FLAG16f25eb7f [2020-09-25 08:59:25,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e3a47b60/fda637b641e24b8b82fbbe75650b8613 [2020-09-25 08:59:25,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:25,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:25,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:25,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:25,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:25,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:25" (1/1) ... [2020-09-25 08:59:25,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bfa12c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25, skipping insertion in model container [2020-09-25 08:59:25,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:25" (1/1) ... [2020-09-25 08:59:25,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:25,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:25,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:25,989 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:26,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:26,117 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:26,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26 WrapperNode [2020-09-25 08:59:26,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:26,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:26,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:26,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:26,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26" (1/1) ... [2020-09-25 08:59:26,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26" (1/1) ... [2020-09-25 08:59:26,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26" (1/1) ... [2020-09-25 08:59:26,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26" (1/1) ... [2020-09-25 08:59:26,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26" (1/1) ... [2020-09-25 08:59:26,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26" (1/1) ... [2020-09-25 08:59:26,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26" (1/1) ... [2020-09-25 08:59:26,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:26,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:26,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:26,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:26,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:26,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:26,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:26,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 08:59:26,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 08:59:26,284 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 08:59:26,285 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 08:59:26,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:26,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:26,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:26,285 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 08:59:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 08:59:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 08:59:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 08:59:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 08:59:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 08:59:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 08:59:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 08:59:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 08:59:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 08:59:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 08:59:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 08:59:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 08:59:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 08:59:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 08:59:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 08:59:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 08:59:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 08:59:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 08:59:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 08:59:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 08:59:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 08:59:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 08:59:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 08:59:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 08:59:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 08:59:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 08:59:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 08:59:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 08:59:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 08:59:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 08:59:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 08:59:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 08:59:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 08:59:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 08:59:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 08:59:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 08:59:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 08:59:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 08:59:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 08:59:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 08:59:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 08:59:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 08:59:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 08:59:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 08:59:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 08:59:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 08:59:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 08:59:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 08:59:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 08:59:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 08:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 08:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 08:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 08:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 08:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 08:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 08:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 08:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 08:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 08:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 08:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 08:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 08:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 08:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 08:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 08:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 08:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 08:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 08:59:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 08:59:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 08:59:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 08:59:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 08:59:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 08:59:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 08:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 08:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 08:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 08:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 08:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 08:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 08:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 08:59:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 08:59:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 08:59:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 08:59:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 08:59:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 08:59:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 08:59:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 08:59:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 08:59:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 08:59:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 08:59:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 08:59:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 08:59:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 08:59:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 08:59:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 08:59:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 08:59:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 08:59:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 08:59:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 08:59:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 08:59:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:59:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:59:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:59:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:59:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:59:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:59:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:26,681 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 08:59:26,931 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:26,931 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 08:59:26,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:26 BoogieIcfgContainer [2020-09-25 08:59:26,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:26,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:26,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:26,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:26,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:25" (1/3) ... [2020-09-25 08:59:26,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b214ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:26, skipping insertion in model container [2020-09-25 08:59:26,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:26" (2/3) ... [2020-09-25 08:59:26,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b214ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:26, skipping insertion in model container [2020-09-25 08:59:26,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:26" (3/3) ... [2020-09-25 08:59:26,947 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 08:59:26,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:26,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:59:26,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:59:27,028 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:27,029 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:27,029 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:27,029 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:27,029 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:27,029 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:27,029 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:27,030 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 08:59:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 08:59:27,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:27,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:27,071 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:27,080 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 08:59:27,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:27,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414651660] [2020-09-25 08:59:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:27,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:59:27,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 08:59:27,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:27,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:59:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:59:27,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:27,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:27,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:59:27,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:27,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:59:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:27,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:27,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:59:27,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:27,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 08:59:27,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:27,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:27,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 08:59:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:27,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:27,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414651660] [2020-09-25 08:59:27,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:27,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:59:27,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278981064] [2020-09-25 08:59:27,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:59:27,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:27,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:59:27,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:27,697 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 08:59:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:28,032 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 08:59:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:59:28,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 08:59:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:28,049 INFO L225 Difference]: With dead ends: 230 [2020-09-25 08:59:28,050 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 08:59:28,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:59:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 08:59:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 08:59:28,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 08:59:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 08:59:28,111 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 08:59:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:28,111 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 08:59:28,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:59:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 08:59:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 08:59:28,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:28,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:28,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:59:28,115 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:28,115 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 08:59:28,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:28,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301046613] [2020-09-25 08:59:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:28,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:28,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:59:28,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:28,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 08:59:28,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:28,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:28,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:28,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:28,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:59:28,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:28,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:28,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:28,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:28,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:59:28,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:28,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:28,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:59:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:28,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:28,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:59:28,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 08:59:28,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:28,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:59:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:59:28,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:28,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301046613] [2020-09-25 08:59:28,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:28,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:59:28,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799531011] [2020-09-25 08:59:28,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:59:28,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:28,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:59:28,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:59:28,530 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 08:59:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:28,914 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 08:59:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:59:28,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 08:59:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:28,918 INFO L225 Difference]: With dead ends: 172 [2020-09-25 08:59:28,918 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 08:59:28,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:59:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 08:59:28,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 08:59:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 08:59:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 08:59:28,942 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 08:59:28,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:28,943 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 08:59:28,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:59:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 08:59:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:59:28,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:28,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:28,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:59:28,948 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:28,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:28,948 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 08:59:28,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:28,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783504780] [2020-09-25 08:59:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:29,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:29,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:33,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:33,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:59:33,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:59:33,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 08:59:33,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:33,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:33,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:59:33,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:59:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:59:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:59:34,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:34,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:34,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:34,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:59:34,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:34,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:34,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:34,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:59:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:34,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:59:34,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:34,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-09-25 08:59:34,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:34,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:59:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:59:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:34,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783504780] [2020-09-25 08:59:34,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:34,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:59:34,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535193582] [2020-09-25 08:59:34,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:59:34,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:34,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:59:34,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:59:34,818 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 11 states. [2020-09-25 08:59:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:35,426 INFO L93 Difference]: Finished difference Result 235 states and 259 transitions. [2020-09-25 08:59:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:59:35,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-25 08:59:35,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:35,428 INFO L225 Difference]: With dead ends: 235 [2020-09-25 08:59:35,428 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 08:59:35,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:59:35,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 08:59:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-09-25 08:59:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 08:59:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2020-09-25 08:59:35,456 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 51 [2020-09-25 08:59:35,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:35,456 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2020-09-25 08:59:35,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:59:35,457 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2020-09-25 08:59:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 08:59:35,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:35,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:35,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:59:35,462 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:35,462 INFO L82 PathProgramCache]: Analyzing trace with hash -894397866, now seen corresponding path program 1 times [2020-09-25 08:59:35,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:35,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352503868] [2020-09-25 08:59:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:40,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:40,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 08:59:40,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:59:40,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4816 [2020-09-25 08:59:40,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:40,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:59:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:59:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:59:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:40,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:40,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:40,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:40,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:40,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:40,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:40,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:40,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:40,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:59:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:40,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:40,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:59:40,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 08:59:40,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:40,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:59:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:59:40,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:40,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352503868] [2020-09-25 08:59:40,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:40,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 08:59:40,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241395797] [2020-09-25 08:59:40,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:59:40,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:40,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:59:40,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:59:40,736 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 11 states. [2020-09-25 08:59:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:41,240 INFO L93 Difference]: Finished difference Result 222 states and 243 transitions. [2020-09-25 08:59:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:59:41,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-09-25 08:59:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:41,243 INFO L225 Difference]: With dead ends: 222 [2020-09-25 08:59:41,244 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 08:59:41,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:59:41,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 08:59:41,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 140. [2020-09-25 08:59:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 08:59:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2020-09-25 08:59:41,277 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 55 [2020-09-25 08:59:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:41,278 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2020-09-25 08:59:41,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:59:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2020-09-25 08:59:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 08:59:41,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:41,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:41,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:59:41,284 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:41,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:41,284 INFO L82 PathProgramCache]: Analyzing trace with hash -118714797, now seen corresponding path program 1 times [2020-09-25 08:59:41,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:41,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952687419] [2020-09-25 08:59:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:41,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:44,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 08:59:44,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:59:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3235 [2020-09-25 08:59:44,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:44,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:59:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 08:59:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 08:59:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:44,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:44,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:44,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:44,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:44,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:44,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:44,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:59:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:44,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:44,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:59:44,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:44,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 08:59:44,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:44,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:59:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:59:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:44,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952687419] [2020-09-25 08:59:44,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:44,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 08:59:44,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125971828] [2020-09-25 08:59:44,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:59:44,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:44,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:59:44,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:59:44,923 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand 12 states. [2020-09-25 08:59:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:45,464 INFO L93 Difference]: Finished difference Result 222 states and 242 transitions. [2020-09-25 08:59:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 08:59:45,465 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-25 08:59:45,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:45,467 INFO L225 Difference]: With dead ends: 222 [2020-09-25 08:59:45,467 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 08:59:45,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-09-25 08:59:45,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 08:59:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-09-25 08:59:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 08:59:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 157 transitions. [2020-09-25 08:59:45,477 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 157 transitions. Word has length 57 [2020-09-25 08:59:45,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:45,478 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 157 transitions. [2020-09-25 08:59:45,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:59:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 157 transitions. [2020-09-25 08:59:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 08:59:45,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:45,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:45,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:59:45,480 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:45,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:45,480 INFO L82 PathProgramCache]: Analyzing trace with hash -24792592, now seen corresponding path program 1 times [2020-09-25 08:59:45,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:45,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301704466] [2020-09-25 08:59:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:45,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:59:45,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:45,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 08:59:45,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:45,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:45,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:59:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:45,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:45,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:45,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:45,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:45,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:45,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:59:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:45,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:59:45,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:45,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 08:59:45,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:45,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:59:45,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:59:45,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:45,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301704466] [2020-09-25 08:59:45,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:45,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:59:45,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594992075] [2020-09-25 08:59:45,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:59:45,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:45,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:59:45,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:59:45,980 INFO L87 Difference]: Start difference. First operand 144 states and 157 transitions. Second operand 9 states. [2020-09-25 08:59:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:46,276 INFO L93 Difference]: Finished difference Result 206 states and 223 transitions. [2020-09-25 08:59:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:59:46,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-09-25 08:59:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:46,278 INFO L225 Difference]: With dead ends: 206 [2020-09-25 08:59:46,278 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 08:59:46,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:59:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 08:59:46,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 137. [2020-09-25 08:59:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-25 08:59:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2020-09-25 08:59:46,286 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 59 [2020-09-25 08:59:46,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:46,286 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2020-09-25 08:59:46,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:59:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2020-09-25 08:59:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 08:59:46,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:46,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:46,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:59:46,288 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-09-25 08:59:46,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:46,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253509600] [2020-09-25 08:59:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:51,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:51,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 08:59:51,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:59:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 08:59:51,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:51,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:59:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:59:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:51,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:51,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:51,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:51,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:51,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:51,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:51,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:59:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:51,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:51,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:51,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:51,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 08:59:51,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-25 08:59:51,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:51,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:51,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:51,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:59:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:59:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:51,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253509600] [2020-09-25 08:59:51,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:51,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:59:51,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849623408] [2020-09-25 08:59:51,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:59:51,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:51,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:59:51,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:59:51,821 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand 7 states. [2020-09-25 08:59:52,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:52,071 INFO L93 Difference]: Finished difference Result 218 states and 239 transitions. [2020-09-25 08:59:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:59:52,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-09-25 08:59:52,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:52,073 INFO L225 Difference]: With dead ends: 218 [2020-09-25 08:59:52,073 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 08:59:52,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:59:52,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 08:59:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-25 08:59:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 08:59:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-09-25 08:59:52,084 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 70 [2020-09-25 08:59:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:52,086 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-09-25 08:59:52,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:59:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-09-25 08:59:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 08:59:52,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:52,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:52,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:59:52,088 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:52,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-25 08:59:52,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:52,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255288575] [2020-09-25 08:59:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:52,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:57,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:59:57,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:59:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 08:59:57,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:57,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:59:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:59:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:59:57,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:57,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:57,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:57,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:59:57,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:57,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:57,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:59:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:59:57,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 08:59:57,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:57,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:59:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:59:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 08:59:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:57,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255288575] [2020-09-25 08:59:57,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:57,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:59:57,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20635201] [2020-09-25 08:59:57,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:59:57,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:57,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:59:57,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:59:57,682 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 11 states. [2020-09-25 08:59:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:58,107 INFO L93 Difference]: Finished difference Result 213 states and 231 transitions. [2020-09-25 08:59:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:59:58,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 08:59:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:58,109 INFO L225 Difference]: With dead ends: 213 [2020-09-25 08:59:58,109 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 08:59:58,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:59:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 08:59:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2020-09-25 08:59:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 08:59:58,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2020-09-25 08:59:58,119 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 71 [2020-09-25 08:59:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:58,121 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2020-09-25 08:59:58,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:59:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2020-09-25 08:59:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 08:59:58,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:58,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:58,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:59:58,126 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:58,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:58,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-09-25 08:59:58,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:58,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701198463] [2020-09-25 08:59:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:58,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:03,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:03,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 09:00:03,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:00:03,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:00:03,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:03,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:00:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:00:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:00:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:03,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:03,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:03,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:00:03,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:03,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:00:03,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:03,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:03,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:03,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:00:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:03,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:03,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:00:03,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-25 09:00:03,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:03,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:00:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:00:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 09:00:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:04,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701198463] [2020-09-25 09:00:04,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:04,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 09:00:04,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782882887] [2020-09-25 09:00:04,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 09:00:04,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:04,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 09:00:04,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:00:04,037 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 13 states. [2020-09-25 09:00:04,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:04,524 INFO L93 Difference]: Finished difference Result 234 states and 253 transitions. [2020-09-25 09:00:04,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:00:04,525 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 09:00:04,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:04,526 INFO L225 Difference]: With dead ends: 234 [2020-09-25 09:00:04,527 INFO L226 Difference]: Without dead ends: 174 [2020-09-25 09:00:04,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:00:04,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-25 09:00:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 155. [2020-09-25 09:00:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 09:00:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-25 09:00:04,540 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 91 [2020-09-25 09:00:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:04,541 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-25 09:00:04,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 09:00:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-25 09:00:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 09:00:04,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:04,543 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:04,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:00:04,543 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:04,544 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-09-25 09:00:04,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:04,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832299131] [2020-09-25 09:00:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:04,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:06,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:09,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 09:00:09,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:00:09,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:00:09,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:09,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:00:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:00:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:00:09,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:09,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:09,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:09,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:00:09,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:09,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:00:09,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:09,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:09,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:00:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking...