/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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 07:50:25,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:25,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:25,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:25,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:25,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:25,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:25,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:26,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:26,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:26,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:26,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:26,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:26,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:26,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:26,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:26,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:26,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:26,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:26,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:26,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:26,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:26,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:26,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:26,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:26,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:26,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:26,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:26,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:26,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:26,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:26,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:26,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:26,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:26,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:26,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:26,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:26,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:26,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:26,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:26,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:26,035 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 07:50:26,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:26,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:26,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:26,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:26,065 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:26,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:26,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:26,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:26,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:26,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:26,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:26,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:26,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:26,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:26,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:26,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:26,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:26,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:26,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:26,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:26,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:26,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:26,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:26,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:26,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:26,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:26,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:26,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:26,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:26,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:50:26,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:26,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:26,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:26,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:26,618 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:26,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 07:50:26,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17fea2054/8e170943a4db49c4a2531f1355fe1c00/FLAG6fd115478 [2020-09-25 07:50:27,350 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:27,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 07:50:27,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17fea2054/8e170943a4db49c4a2531f1355fe1c00/FLAG6fd115478 [2020-09-25 07:50:27,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17fea2054/8e170943a4db49c4a2531f1355fe1c00 [2020-09-25 07:50:27,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:27,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:27,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:27,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:27,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:27,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:27" (1/1) ... [2020-09-25 07:50:27,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176fd554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:27, skipping insertion in model container [2020-09-25 07:50:27,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:27" (1/1) ... [2020-09-25 07:50:27,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:27,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:28,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:28,270 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:28,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:28,434 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:28,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28 WrapperNode [2020-09-25 07:50:28,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:28,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:28,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:28,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:28,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28" (1/1) ... [2020-09-25 07:50:28,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28" (1/1) ... [2020-09-25 07:50:28,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28" (1/1) ... [2020-09-25 07:50:28,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28" (1/1) ... [2020-09-25 07:50:28,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28" (1/1) ... [2020-09-25 07:50:28,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28" (1/1) ... [2020-09-25 07:50:28,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28" (1/1) ... [2020-09-25 07:50:28,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:28,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:28,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:28,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:28,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28" (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 07:50:28,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:50:28,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:50:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 07:50:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 07:50:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 07:50:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 07:50:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:50:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:50:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:50:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 07:50:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 07:50:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 07:50:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 07:50:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 07:50:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 07:50:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 07:50:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 07:50:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 07:50:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 07:50:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 07:50:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 07:50:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 07:50:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 07:50:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 07:50:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 07:50:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 07:50:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 07:50:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 07:50:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 07:50:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 07:50:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 07:50:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 07:50:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 07:50:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 07:50:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 07:50:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 07:50:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 07:50:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 07:50:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 07:50:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 07:50:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 07:50:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 07:50:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 07:50:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 07:50:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 07:50:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 07:50:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 07:50:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 07:50:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 07:50:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 07:50:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 07:50:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 07:50:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 07:50:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 07:50:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 07:50:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 07:50:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 07:50:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 07:50:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 07:50:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 07:50:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 07:50:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:50:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 07:50:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 07:50:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:50:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 07:50:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 07:50:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 07:50:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 07:50:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 07:50:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 07:50:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 07:50:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 07:50:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 07:50:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:50:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 07:50:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 07:50:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 07:50:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 07:50:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 07:50:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 07:50:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 07:50:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 07:50:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 07:50:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 07:50:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 07:50:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 07:50:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 07:50:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 07:50:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 07:50:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 07:50:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 07:50:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 07:50:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 07:50:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 07:50:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 07:50:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 07:50:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 07:50:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 07:50:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 07:50:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 07:50:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 07:50:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 07:50:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 07:50:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 07:50:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 07:50:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 07:50:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 07:50:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 07:50:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 07:50:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 07:50:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 07:50:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 07:50:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 07:50:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 07:50:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 07:50:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:50:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:50:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:50:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:50:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:50:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:50:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:50:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:50:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:50:28,988 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 07:50:29,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:50:29,247 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 07:50:29,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:29 BoogieIcfgContainer [2020-09-25 07:50:29,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:50:29,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:50:29,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:50:29,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:50:29,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:27" (1/3) ... [2020-09-25 07:50:29,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5adb48c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:29, skipping insertion in model container [2020-09-25 07:50:29,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:28" (2/3) ... [2020-09-25 07:50:29,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5adb48c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:29, skipping insertion in model container [2020-09-25 07:50:29,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:29" (3/3) ... [2020-09-25 07:50:29,263 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 07:50:29,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:50:29,287 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:50:29,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:50:29,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:50:29,348 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:50:29,348 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:50:29,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:50:29,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:50:29,348 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:50:29,349 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:50:29,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:50:29,380 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 07:50:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 07:50:29,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:29,393 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 07:50:29,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 07:50:29,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:29,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311323242] [2020-09-25 07:50:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:29,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:29,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:29,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:50:29,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:29,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 07:50:29,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:29,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:29,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:29,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:50:29,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:29,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:50:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:29,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:29,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:29,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:29,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:50:29,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:29,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:29,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:29,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:50:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:29,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:29,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:50:29,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:29,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 07:50:29,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:29,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:50:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:29,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:29,965 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 07:50:29,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311323242] [2020-09-25 07:50:29,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:29,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:29,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562430191] [2020-09-25 07:50:29,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:29,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:29,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:30,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:30,004 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 07:50:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:30,324 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 07:50:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:50:30,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 07:50:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:30,343 INFO L225 Difference]: With dead ends: 230 [2020-09-25 07:50:30,343 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 07:50:30,349 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 07:50:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 07:50:30,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 07:50:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 07:50:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 07:50:30,409 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 07:50:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:30,409 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 07:50:30,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 07:50:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 07:50:30,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:30,412 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 07:50:30,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:50:30,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 07:50:30,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:30,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017706381] [2020-09-25 07:50:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:30,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:50:30,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:30,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 07:50:30,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:30,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:30,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:30,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:30,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:50:30,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:30,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:30,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:30,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:30,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:50:30,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:30,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:30,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:50:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:30,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:30,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:50:30,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:30,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 07:50:30,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:30,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:50:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:50:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 07:50:30,853 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 07:50:30,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017706381] [2020-09-25 07:50:30,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:30,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:50:30,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326451372] [2020-09-25 07:50:30,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:50:30,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:30,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:50:30,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:50:30,859 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 07:50:31,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:31,205 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 07:50:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:50:31,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 07:50:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:31,208 INFO L225 Difference]: With dead ends: 172 [2020-09-25 07:50:31,209 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 07:50:31,210 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 07:50:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 07:50:31,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 07:50:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 07:50:31,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 07:50:31,224 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 07:50:31,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:31,225 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 07:50:31,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:50:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 07:50:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 07:50:31,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:31,227 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 07:50:31,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:50:31,228 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:31,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:31,228 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 07:50:31,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:31,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619459239] [2020-09-25 07:50:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:36,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:36,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 07:50:36,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:50:36,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:50:36,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:36,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:36,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:50:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:50:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:50:36,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:50:36,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:36,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:36,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:36,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:36,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:36,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:50:36,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:36,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:36,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:36,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:36,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:36,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:50:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:36,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:36,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:36,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:50:36,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-09-25 07:50:36,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:36,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:50:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:50:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:37,194 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 07:50:37,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619459239] [2020-09-25 07:50:37,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:37,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:50:37,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855018019] [2020-09-25 07:50:37,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:50:37,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:37,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:50:37,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:50:37,199 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 11 states. [2020-09-25 07:50:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:37,834 INFO L93 Difference]: Finished difference Result 235 states and 259 transitions. [2020-09-25 07:50:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:50:37,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-25 07:50:37,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:37,838 INFO L225 Difference]: With dead ends: 235 [2020-09-25 07:50:37,838 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 07:50:37,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-09-25 07:50:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 07:50:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-09-25 07:50:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 07:50:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2020-09-25 07:50:37,854 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 51 [2020-09-25 07:50:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:37,854 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2020-09-25 07:50:37,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:50:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2020-09-25 07:50:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 07:50:37,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:37,857 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 07:50:37,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:50:37,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash -894397866, now seen corresponding path program 1 times [2020-09-25 07:50:37,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:37,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811980111] [2020-09-25 07:50:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:37,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:38,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 07:50:42,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:50:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:50:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:42,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:50:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:42,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:42,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:42,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:42,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:42,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:42,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:42,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:42,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:50:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:50:43,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 07:50:43,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:50:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:50:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:43,178 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 07:50:43,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811980111] [2020-09-25 07:50:43,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:43,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:50:43,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833972465] [2020-09-25 07:50:43,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:50:43,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:43,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:50:43,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:43,180 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 9 states. [2020-09-25 07:50:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:43,496 INFO L93 Difference]: Finished difference Result 168 states and 183 transitions. [2020-09-25 07:50:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:50:43,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-09-25 07:50:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:43,499 INFO L225 Difference]: With dead ends: 168 [2020-09-25 07:50:43,499 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 07:50:43,500 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 07:50:43,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 07:50:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 113. [2020-09-25 07:50:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 07:50:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-09-25 07:50:43,522 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 55 [2020-09-25 07:50:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:43,523 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-09-25 07:50:43,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:50:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-09-25 07:50:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 07:50:43,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:43,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:43,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:50:43,531 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:43,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:43,531 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-09-25 07:50:43,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:43,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874194683] [2020-09-25 07:50:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:43,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:48,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:48,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:50:48,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:50:48,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:50:48,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:48,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:50:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:50:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:48,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:48,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:48,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:48,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:48,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:48,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:48,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:48,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:48,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:48,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:50:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:48,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:48,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:48,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 07:50:48,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 07:50:48,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:48,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 07:50:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:50:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:49,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874194683] [2020-09-25 07:50:49,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:49,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:50:49,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641533427] [2020-09-25 07:50:49,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:50:49,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:49,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:50:49,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:50:49,003 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand 7 states. [2020-09-25 07:50:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:49,341 INFO L93 Difference]: Finished difference Result 194 states and 213 transitions. [2020-09-25 07:50:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:50:49,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-09-25 07:50:49,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:49,343 INFO L225 Difference]: With dead ends: 194 [2020-09-25 07:50:49,343 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 07:50:49,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:50:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 07:50:49,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-25 07:50:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 07:50:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-09-25 07:50:49,353 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 70 [2020-09-25 07:50:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:49,354 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-09-25 07:50:49,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:50:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-09-25 07:50:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 07:50:49,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:49,356 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 07:50:49,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:50:49,356 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:49,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:49,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-25 07:50:49,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:49,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997625300] [2020-09-25 07:50:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:54,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:54,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 07:50:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:50:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:50:54,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:54,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:50:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:50:54,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:54,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:54,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:54,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:54,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:50:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:54,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:54,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:50:54,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:54,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 07:50:54,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:54,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:54,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:50:54,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:50:54,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:50:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:54,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997625300] [2020-09-25 07:50:54,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:54,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:50:54,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291666602] [2020-09-25 07:50:54,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:50:54,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:54,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:50:54,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:50:54,914 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 11 states. [2020-09-25 07:50:55,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:55,351 INFO L93 Difference]: Finished difference Result 213 states and 231 transitions. [2020-09-25 07:50:55,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:50:55,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 07:50:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:55,354 INFO L225 Difference]: With dead ends: 213 [2020-09-25 07:50:55,355 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 07:50:55,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:50:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 07:50:55,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2020-09-25 07:50:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 07:50:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2020-09-25 07:50:55,364 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 71 [2020-09-25 07:50:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:55,364 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2020-09-25 07:50:55,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:50:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2020-09-25 07:50:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 07:50:55,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:55,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:55,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:50:55,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:55,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:55,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-09-25 07:50:55,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:55,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626323282] [2020-09-25 07:50:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:55,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:00,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:00,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 07:51:00,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:51:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:51:00,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:00,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:51:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:51:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:51:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:00,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:00,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:00,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:51:00,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:51:00,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:00,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:51:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:01,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:51:01,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-09-25 07:51:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:01,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:51:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:51:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 07:51:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:01,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626323282] [2020-09-25 07:51:01,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:01,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 07:51:01,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703890097] [2020-09-25 07:51:01,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 07:51:01,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:01,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 07:51:01,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:51:01,214 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 13 states. [2020-09-25 07:51:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:01,627 INFO L93 Difference]: Finished difference Result 234 states and 253 transitions. [2020-09-25 07:51:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 07:51:01,628 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 07:51:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:01,633 INFO L225 Difference]: With dead ends: 234 [2020-09-25 07:51:01,633 INFO L226 Difference]: Without dead ends: 174 [2020-09-25 07:51:01,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-09-25 07:51:01,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-25 07:51:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 155. [2020-09-25 07:51:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 07:51:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-25 07:51:01,651 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 91 [2020-09-25 07:51:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:01,652 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-25 07:51:01,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 07:51:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-25 07:51:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 07:51:01,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:01,654 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:01,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:51:01,655 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:01,660 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-09-25 07:51:01,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:01,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918361807] [2020-09-25 07:51:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:05,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:06,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:06,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 07:51:06,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:51:06,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:51:06,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:06,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:51:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:51:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:51:06,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:06,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:51:06,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:06,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:51:06,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:06,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:06,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:51:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:06,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:07,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:07,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 07:51:07,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-09-25 07:51:07,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:07,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:51:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:51:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 07:51:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:07,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918361807] [2020-09-25 07:51:07,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:07,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 07:51:07,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704206818] [2020-09-25 07:51:07,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 07:51:07,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:07,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 07:51:07,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:51:07,869 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 15 states. [2020-09-25 07:51:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:08,418 INFO L93 Difference]: Finished difference Result 255 states and 275 transitions. [2020-09-25 07:51:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 07:51:08,419 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-09-25 07:51:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:08,421 INFO L225 Difference]: With dead ends: 255 [2020-09-25 07:51:08,421 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 07:51:08,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-25 07:51:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 07:51:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 176. [2020-09-25 07:51:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 07:51:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2020-09-25 07:51:08,430 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 111 [2020-09-25 07:51:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:08,431 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2020-09-25 07:51:08,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 07:51:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2020-09-25 07:51:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 07:51:08,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:08,433 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:08,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:51:08,434 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:08,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 4 times [2020-09-25 07:51:08,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:08,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730348518] [2020-09-25 07:51:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:10,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 07:51:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:51:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2462 [2020-09-25 07:51:10,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:10,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:51:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 07:51:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 07:51:10,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:11,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:11,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:51:11,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:51:11,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:11,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:11,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:11,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:51:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:11,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:12,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 07:51:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1658 [2020-09-25 07:51:12,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:12,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:51:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 07:51:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 07:51:13,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730348518] [2020-09-25 07:51:13,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:13,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 07:51:13,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265880804] [2020-09-25 07:51:13,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 07:51:13,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:13,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 07:51:13,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-25 07:51:13,159 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 18 states. [2020-09-25 07:51:14,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:14,099 INFO L93 Difference]: Finished difference Result 285 states and 309 transitions. [2020-09-25 07:51:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 07:51:14,100 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 131 [2020-09-25 07:51:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:14,103 INFO L225 Difference]: With dead ends: 285 [2020-09-25 07:51:14,103 INFO L226 Difference]: Without dead ends: 230 [2020-09-25 07:51:14,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2020-09-25 07:51:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-25 07:51:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 182. [2020-09-25 07:51:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-25 07:51:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 195 transitions. [2020-09-25 07:51:14,112 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 195 transitions. Word has length 131 [2020-09-25 07:51:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:14,113 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 195 transitions. [2020-09-25 07:51:14,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 07:51:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 195 transitions. [2020-09-25 07:51:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 07:51:14,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:14,115 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:14,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:51:14,116 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:14,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:14,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1200683152, now seen corresponding path program 1 times [2020-09-25 07:51:14,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:14,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535405692] [2020-09-25 07:51:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:14,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:16,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:16,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 07:51:16,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:51:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2514 [2020-09-25 07:51:16,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:16,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 07:51:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 07:51:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:51:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:16,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:16,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:51:16,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:16,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:51:16,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:16,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:16,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:16,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:16,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:16,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:51:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat