/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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 10:05:41,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:41,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:41,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:41,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:41,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:41,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:41,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:41,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:41,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:41,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:41,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:41,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:41,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:41,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:41,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:41,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:41,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:41,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:41,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:41,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:41,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:41,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:41,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:41,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:41,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:41,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:41,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:41,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:41,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:41,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:41,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:41,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:41,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:41,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:41,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:41,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:41,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:41,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:41,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:41,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:41,817 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 10:05:41,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:41,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:41,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:41,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:41,871 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:41,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:41,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:41,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:41,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:41,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:41,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:41,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:41,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:41,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:41,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:41,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:41,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:41,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:41,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:41,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:41,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:41,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:41,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:41,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:41,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:41,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:41,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:41,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:41,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:41,877 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:05:42,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:42,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:42,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:42,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:42,368 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:42,369 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 10:05:42,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45e5626eb/3f93dfa2297c412ebeca102354ce2932/FLAGc97d48224 [2020-09-25 10:05:43,064 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:43,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 10:05:43,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45e5626eb/3f93dfa2297c412ebeca102354ce2932/FLAGc97d48224 [2020-09-25 10:05:43,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45e5626eb/3f93dfa2297c412ebeca102354ce2932 [2020-09-25 10:05:43,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:43,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:43,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:43,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:43,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:43,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:43" (1/1) ... [2020-09-25 10:05:43,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ac5216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:43, skipping insertion in model container [2020-09-25 10:05:43,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:43" (1/1) ... [2020-09-25 10:05:43,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:43,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:43,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:44,004 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:44,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:44,145 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:44,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44 WrapperNode [2020-09-25 10:05:44,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:44,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:44,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:44,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:44,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44" (1/1) ... [2020-09-25 10:05:44,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44" (1/1) ... [2020-09-25 10:05:44,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44" (1/1) ... [2020-09-25 10:05:44,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44" (1/1) ... [2020-09-25 10:05:44,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44" (1/1) ... [2020-09-25 10:05:44,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44" (1/1) ... [2020-09-25 10:05:44,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44" (1/1) ... [2020-09-25 10:05:44,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:44,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:44,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:44,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:44,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44" (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 10:05:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 10:05:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 10:05:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 10:05:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 10:05:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 10:05:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 10:05:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 10:05:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 10:05:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:44,726 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 10:05:44,972 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:44,972 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 10:05:44,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:44 BoogieIcfgContainer [2020-09-25 10:05:44,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:44,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:44,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:44,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:44,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:43" (1/3) ... [2020-09-25 10:05:44,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1d0871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:44, skipping insertion in model container [2020-09-25 10:05:44,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:44" (2/3) ... [2020-09-25 10:05:44,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1d0871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:44, skipping insertion in model container [2020-09-25 10:05:44,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:44" (3/3) ... [2020-09-25 10:05:44,988 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 10:05:45,001 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:45,012 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:05:45,035 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:05:45,066 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:45,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:45,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:45,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:45,067 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:45,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:45,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:45,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 10:05:45,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 10:05:45,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:45,102 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 10:05:45,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:45,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:45,111 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 10:05:45,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:45,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358095115] [2020-09-25 10:05:45,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:45,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:45,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:05:45,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:45,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 10:05:45,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:45,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:05:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:45,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:45,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:45,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:45,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:45,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:05:45,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:45,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 10:05:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:45,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:45,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:05:45,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 10:05:45,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:45,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 10:05:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:45,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:45,649 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 10:05:45,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358095115] [2020-09-25 10:05:45,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:45,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:05:45,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256531882] [2020-09-25 10:05:45,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:05:45,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:45,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:05:45,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:05:45,684 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 10:05:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:46,115 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 10:05:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:05:46,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 10:05:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:46,133 INFO L225 Difference]: With dead ends: 230 [2020-09-25 10:05:46,134 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 10:05:46,139 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 10:05:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 10:05:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 10:05:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 10:05:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 10:05:46,224 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 10:05:46,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:46,225 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 10:05:46,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:05:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 10:05:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 10:05:46,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:46,229 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 10:05:46,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:46,232 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 10:05:46,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:46,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866746686] [2020-09-25 10:05:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:46,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:05:46,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 10:05:46,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:46,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:05:46,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:46,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:46,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:46,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:46,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:46,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:46,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 10:05:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:46,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:46,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:05:46,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 10:05:46,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:46,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:05:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:05:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,669 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 10:05:46,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866746686] [2020-09-25 10:05:46,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:46,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:05:46,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69082998] [2020-09-25 10:05:46,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:46,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:46,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:46,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:46,674 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 10:05:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:47,079 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 10:05:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:05:47,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 10:05:47,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:47,082 INFO L225 Difference]: With dead ends: 172 [2020-09-25 10:05:47,082 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 10:05:47,085 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 10:05:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 10:05:47,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 10:05:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 10:05:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 10:05:47,105 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 10:05:47,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:47,106 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 10:05:47,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 10:05:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:05:47,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:47,108 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 10:05:47,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:47,108 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:47,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 10:05:47,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:47,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130800557] [2020-09-25 10:05:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:48,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:52,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 10:05:52,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:05:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:05:52,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:52,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:05:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:05:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:05:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:05:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:52,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:52,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:52,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:52,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:52,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:05:52,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 10:05:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:52,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:05:52,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 10:05:52,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:52,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:52,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:05:52,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:52,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:05:52,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:52,944 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 10:05:52,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130800557] [2020-09-25 10:05:52,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:52,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 10:05:52,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817893303] [2020-09-25 10:05:52,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:05:52,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:52,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:05:52,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:05:52,948 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 11 states. [2020-09-25 10:05:53,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:53,491 INFO L93 Difference]: Finished difference Result 194 states and 213 transitions. [2020-09-25 10:05:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:05:53,492 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-25 10:05:53,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:53,494 INFO L225 Difference]: With dead ends: 194 [2020-09-25 10:05:53,494 INFO L226 Difference]: Without dead ends: 139 [2020-09-25 10:05:53,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:05:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-25 10:05:53,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 105. [2020-09-25 10:05:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 10:05:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2020-09-25 10:05:53,506 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 51 [2020-09-25 10:05:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:53,507 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2020-09-25 10:05:53,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:05:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2020-09-25 10:05:53,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 10:05:53,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:53,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:53,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:05:53,510 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:53,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:53,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2045358757, now seen corresponding path program 1 times [2020-09-25 10:05:53,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:53,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771801148] [2020-09-25 10:05:53,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:58,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:05:58,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:05:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:05:58,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:58,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:05:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:05:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:05:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:58,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:58,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:58,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:58,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:58,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:58,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 10:05:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:59,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:59,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:05:59,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-09-25 10:05:59,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:59,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:05:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:05:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:59,370 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 10:05:59,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771801148] [2020-09-25 10:05:59,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:59,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:05:59,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790542585] [2020-09-25 10:05:59,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:05:59,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:05:59,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:05:59,374 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand 15 states. [2020-09-25 10:06:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:00,066 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2020-09-25 10:06:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:06:00,066 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-09-25 10:06:00,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:00,070 INFO L225 Difference]: With dead ends: 251 [2020-09-25 10:06:00,070 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 10:06:00,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:06:00,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 10:06:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 137. [2020-09-25 10:06:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-25 10:06:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2020-09-25 10:06:00,110 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 52 [2020-09-25 10:06:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:00,110 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2020-09-25 10:06:00,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:06:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2020-09-25 10:06:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 10:06:00,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:00,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:00,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:06:00,117 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:00,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:00,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1909380728, now seen corresponding path program 1 times [2020-09-25 10:06:00,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:00,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706746898] [2020-09-25 10:06:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:00,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:00,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:00,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:05,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 10:06:05,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:06:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:06:05,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:05,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:06:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:06:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:06:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:05,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:05,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:05,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:05,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:05,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:05,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:05,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:05,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 10:06:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:05,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:06:05,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-25 10:06:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:05,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:06:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:06:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:06,042 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 10:06:06,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706746898] [2020-09-25 10:06:06,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:06,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:06:06,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048996555] [2020-09-25 10:06:06,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:06:06,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:06,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:06:06,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:06:06,045 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand 16 states. [2020-09-25 10:06:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:06,970 INFO L93 Difference]: Finished difference Result 262 states and 288 transitions. [2020-09-25 10:06:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 10:06:06,972 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-09-25 10:06:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:06,976 INFO L225 Difference]: With dead ends: 262 [2020-09-25 10:06:06,976 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 10:06:06,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:06:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 10:06:07,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 141. [2020-09-25 10:06:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-25 10:06:07,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2020-09-25 10:06:07,002 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 54 [2020-09-25 10:06:07,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:07,003 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2020-09-25 10:06:07,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:06:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2020-09-25 10:06:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 10:06:07,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:07,012 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 10:06:07,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:06:07,017 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:07,017 INFO L82 PathProgramCache]: Analyzing trace with hash -894397866, now seen corresponding path program 1 times [2020-09-25 10:06:07,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:07,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456120022] [2020-09-25 10:06:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:07,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:11,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:11,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:06:11,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:06:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4509 [2020-09-25 10:06:11,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:11,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:06:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:06:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:06:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:11,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:11,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 10:06:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:11,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:11,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:06:11,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:11,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 10:06:11,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:11,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:11,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:11,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:11,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:06:11,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:12,002 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 10:06:12,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456120022] [2020-09-25 10:06:12,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:12,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 10:06:12,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072964973] [2020-09-25 10:06:12,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:06:12,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:12,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:06:12,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:06:12,007 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand 11 states. [2020-09-25 10:06:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:12,549 INFO L93 Difference]: Finished difference Result 208 states and 227 transitions. [2020-09-25 10:06:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:06:12,550 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-09-25 10:06:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:12,551 INFO L225 Difference]: With dead ends: 208 [2020-09-25 10:06:12,551 INFO L226 Difference]: Without dead ends: 180 [2020-09-25 10:06:12,552 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 10:06:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-09-25 10:06:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 149. [2020-09-25 10:06:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-25 10:06:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-09-25 10:06:12,561 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 55 [2020-09-25 10:06:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:12,562 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-09-25 10:06:12,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:06:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-09-25 10:06:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 10:06:12,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:12,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:12,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:06:12,564 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:12,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1536545418, now seen corresponding path program 1 times [2020-09-25 10:06:12,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:12,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049932845] [2020-09-25 10:06:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:15,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:06:17,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:06:17,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:06:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:06:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:06:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:17,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:17,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:17,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:17,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:17,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 10:06:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:17,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:19,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:19,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:06:19,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:06:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2123 [2020-09-25 10:06:19,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:19,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:06:19,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:20,160 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-09-25 10:06:20,349 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-09-25 10:06:20,570 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-09-25 10:06:20,689 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 10:06:20,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049932845] [2020-09-25 10:06:20,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:20,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-25 10:06:20,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32339034] [2020-09-25 10:06:20,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:06:20,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:20,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:06:20,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:06:20,691 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 17 states. [2020-09-25 10:06:21,146 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-09-25 10:06:21,353 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-09-25 10:06:21,580 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 10:06:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:22,338 INFO L93 Difference]: Finished difference Result 237 states and 258 transitions. [2020-09-25 10:06:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 10:06:22,338 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 10:06:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:22,340 INFO L225 Difference]: With dead ends: 237 [2020-09-25 10:06:22,341 INFO L226 Difference]: Without dead ends: 209 [2020-09-25 10:06:22,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:06:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-25 10:06:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 151. [2020-09-25 10:06:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-25 10:06:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 166 transitions. [2020-09-25 10:06:22,351 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 166 transitions. Word has length 56 [2020-09-25 10:06:22,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:22,351 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 166 transitions. [2020-09-25 10:06:22,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:06:22,351 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 166 transitions. [2020-09-25 10:06:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 10:06:22,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:22,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:22,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:06:22,353 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:22,354 INFO L82 PathProgramCache]: Analyzing trace with hash -940196043, now seen corresponding path program 1 times [2020-09-25 10:06:22,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:22,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316676397] [2020-09-25 10:06:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:22,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:25,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:06:25,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:06:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2740 [2020-09-25 10:06:25,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:25,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:25,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:25,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:06:25,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:06:25,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:25,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:25,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:25,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:25,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:25,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:25,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 10:06:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:25,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:06:25,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 10:06:25,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:25,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:06:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:06:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:25,460 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 10:06:25,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316676397] [2020-09-25 10:06:25,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:25,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:06:25,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867570876] [2020-09-25 10:06:25,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:06:25,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:25,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:06:25,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:06:25,462 INFO L87 Difference]: Start difference. First operand 151 states and 166 transitions. Second operand 9 states. [2020-09-25 10:06:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:25,812 INFO L93 Difference]: Finished difference Result 248 states and 272 transitions. [2020-09-25 10:06:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:06:25,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-09-25 10:06:25,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:25,815 INFO L225 Difference]: With dead ends: 248 [2020-09-25 10:06:25,815 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 10:06:25,816 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 10:06:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 10:06:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 136. [2020-09-25 10:06:25,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-25 10:06:25,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2020-09-25 10:06:25,824 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 56 [2020-09-25 10:06:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:25,824 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2020-09-25 10:06:25,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:06:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2020-09-25 10:06:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 10:06:25,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:25,826 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 10:06:25,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:06:25,826 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:25,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-25 10:06:25,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:25,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094976942] [2020-09-25 10:06:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:29,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking...