/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:18:32,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:18:32,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:18:33,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:18:33,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:18:33,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:18:33,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:18:33,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:18:33,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:18:33,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:18:33,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:18:33,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:18:33,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:18:33,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:18:33,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:18:33,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:18:33,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:18:33,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:18:33,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:18:33,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:18:33,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:18:33,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:18:33,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:18:33,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:18:33,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:18:33,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:18:33,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:18:33,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:18:33,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:18:33,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:18:33,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:18:33,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:18:33,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:18:33,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:18:33,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:18:33,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:18:33,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:18:33,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:18:33,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:18:33,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:18:33,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:18:33,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:18:33,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:18:33,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:18:33,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:18:33,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:18:33,086 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:18:33,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:18:33,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:18:33,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:18:33,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:18:33,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:18:33,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:18:33,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:18:33,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:18:33,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:18:33,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:18:33,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:18:33,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:18:33,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:18:33,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:18:33,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:18:33,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:18:33,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:18:33,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:18:33,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:18:33,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:18:33,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:18:33,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:18:33,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:18:33,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:18:33,093 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:18:33,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:18:33,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:18:33,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:18:33,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:18:33,591 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:18:33,592 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-24 18:18:33,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48be61c7a/138f597ef905488e8748613a53ee992d/FLAGb2a9db241 [2020-09-24 18:18:34,355 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:18:34,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-24 18:18:34,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48be61c7a/138f597ef905488e8748613a53ee992d/FLAGb2a9db241 [2020-09-24 18:18:34,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48be61c7a/138f597ef905488e8748613a53ee992d [2020-09-24 18:18:34,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:18:34,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:18:34,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:18:34,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:18:34,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:18:34,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:18:34" (1/1) ... [2020-09-24 18:18:34,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411e9963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:34, skipping insertion in model container [2020-09-24 18:18:34,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:18:34" (1/1) ... [2020-09-24 18:18:34,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:18:34,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:18:35,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:18:35,193 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:18:35,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:18:35,289 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:18:35,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35 WrapperNode [2020-09-24 18:18:35,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:18:35,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:18:35,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:18:35,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:18:35,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35" (1/1) ... [2020-09-24 18:18:35,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35" (1/1) ... [2020-09-24 18:18:35,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35" (1/1) ... [2020-09-24 18:18:35,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35" (1/1) ... [2020-09-24 18:18:35,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35" (1/1) ... [2020-09-24 18:18:35,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35" (1/1) ... [2020-09-24 18:18:35,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35" (1/1) ... [2020-09-24 18:18:35,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:18:35,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:18:35,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:18:35,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:18:35,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:18:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:18:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:18:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:18:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 18:18:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 18:18:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 18:18:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 18:18:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 18:18:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 18:18:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 18:18:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 18:18:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 18:18:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 18:18:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 18:18:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 18:18:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 18:18:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 18:18:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 18:18:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 18:18:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 18:18:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 18:18:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 18:18:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 18:18:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 18:18:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 18:18:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 18:18:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 18:18:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 18:18:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 18:18:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 18:18:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 18:18:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 18:18:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 18:18:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 18:18:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 18:18:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 18:18:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 18:18:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 18:18:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 18:18:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 18:18:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 18:18:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 18:18:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 18:18:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 18:18:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 18:18:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 18:18:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 18:18:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 18:18:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 18:18:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 18:18:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 18:18:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 18:18:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 18:18:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:18:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 18:18:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 18:18:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:18:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 18:18:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 18:18:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 18:18:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 18:18:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 18:18:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:18:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 18:18:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 18:18:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 18:18:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:18:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 18:18:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 18:18:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 18:18:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 18:18:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 18:18:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 18:18:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 18:18:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 18:18:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 18:18:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 18:18:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 18:18:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 18:18:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 18:18:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 18:18:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 18:18:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 18:18:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 18:18:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 18:18:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 18:18:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 18:18:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 18:18:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 18:18:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 18:18:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 18:18:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 18:18:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 18:18:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 18:18:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 18:18:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 18:18:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 18:18:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 18:18:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 18:18:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 18:18:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 18:18:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 18:18:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 18:18:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 18:18:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 18:18:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 18:18:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:18:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:18:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:18:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:18:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 18:18:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:18:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 18:18:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:18:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:18:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:18:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:18:36,182 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:18:36,182 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-24 18:18:36,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:18:36 BoogieIcfgContainer [2020-09-24 18:18:36,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:18:36,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:18:36,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:18:36,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:18:36,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:18:34" (1/3) ... [2020-09-24 18:18:36,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae43bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:18:36, skipping insertion in model container [2020-09-24 18:18:36,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:35" (2/3) ... [2020-09-24 18:18:36,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae43bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:18:36, skipping insertion in model container [2020-09-24 18:18:36,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:18:36" (3/3) ... [2020-09-24 18:18:36,199 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-24 18:18:36,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:18:36,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-24 18:18:36,244 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-24 18:18:36,272 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:18:36,273 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:18:36,273 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:18:36,273 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:18:36,273 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:18:36,273 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:18:36,273 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:18:36,274 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:18:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-24 18:18:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 18:18:36,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:36,312 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] [2020-09-24 18:18:36,313 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:36,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-24 18:18:36,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:36,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353712510] [2020-09-24 18:18:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:37,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:37,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:18:37,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:18:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-09-24 18:18:37,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:37,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:18:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:18:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:37,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:37,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:37,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:37,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:18:37,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:37,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:37,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:37,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353712510] [2020-09-24 18:18:37,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:37,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:18:37,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662208511] [2020-09-24 18:18:37,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:18:37,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:37,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:18:37,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:18:37,345 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-24 18:18:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:37,654 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2020-09-24 18:18:37,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:18:37,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-24 18:18:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:37,669 INFO L225 Difference]: With dead ends: 228 [2020-09-24 18:18:37,670 INFO L226 Difference]: Without dead ends: 100 [2020-09-24 18:18:37,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:18:37,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-24 18:18:37,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-09-24 18:18:37,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 18:18:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-09-24 18:18:37,730 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 23 [2020-09-24 18:18:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:37,731 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-09-24 18:18:37,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:18:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-09-24 18:18:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 18:18:37,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:37,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:37,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:18:37,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:37,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:37,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1887154194, now seen corresponding path program 1 times [2020-09-24 18:18:37,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:37,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120033753] [2020-09-24 18:18:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:38,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:38,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:18:38,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:38,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 18:18:38,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:18:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:18:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:18:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:38,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:38,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:38,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:38,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:18:38,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:38,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:38,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120033753] [2020-09-24 18:18:38,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:38,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:18:38,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528351756] [2020-09-24 18:18:38,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:18:38,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:38,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:18:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:18:38,149 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand 8 states. [2020-09-24 18:18:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:38,586 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-09-24 18:18:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:18:38,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 18:18:38,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:38,589 INFO L225 Difference]: With dead ends: 121 [2020-09-24 18:18:38,589 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 18:18:38,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:18:38,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 18:18:38,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-24 18:18:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-24 18:18:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-24 18:18:38,602 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 25 [2020-09-24 18:18:38,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:38,603 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-24 18:18:38,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:18:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-24 18:18:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 18:18:38,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:38,604 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] [2020-09-24 18:18:38,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:18:38,605 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:38,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:38,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-24 18:18:38,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:38,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671084257] [2020-09-24 18:18:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:38,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:38,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:38,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:18:38,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:38,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 18:18:38,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:18:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:18:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:18:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:38,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:38,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:18:38,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:38,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671084257] [2020-09-24 18:18:38,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:38,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:18:38,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212477667] [2020-09-24 18:18:38,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:18:38,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:38,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:18:38,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:18:38,895 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-24 18:18:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:39,199 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-24 18:18:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:18:39,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 18:18:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:39,202 INFO L225 Difference]: With dead ends: 146 [2020-09-24 18:18:39,202 INFO L226 Difference]: Without dead ends: 143 [2020-09-24 18:18:39,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:18:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-24 18:18:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-24 18:18:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 18:18:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-24 18:18:39,232 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-24 18:18:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:39,232 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-24 18:18:39,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:18:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-24 18:18:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 18:18:39,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:39,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:39,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:18:39,238 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:39,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-24 18:18:39,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:39,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123360533] [2020-09-24 18:18:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:39,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:39,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 18:18:39,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:18:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-09-24 18:18:39,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:18:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 18:18:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 18:18:39,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:40,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:40,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:40,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:40,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:18:40,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:40,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:40,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123360533] [2020-09-24 18:18:40,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:40,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:18:40,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522194470] [2020-09-24 18:18:40,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:18:40,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:40,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:18:40,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:18:40,062 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-24 18:18:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:40,462 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2020-09-24 18:18:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:18:40,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-24 18:18:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:40,465 INFO L225 Difference]: With dead ends: 140 [2020-09-24 18:18:40,465 INFO L226 Difference]: Without dead ends: 118 [2020-09-24 18:18:40,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:18:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-24 18:18:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2020-09-24 18:18:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 18:18:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-09-24 18:18:40,497 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 38 [2020-09-24 18:18:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:40,500 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-09-24 18:18:40,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:18:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-09-24 18:18:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 18:18:40,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:40,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:40,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:18:40,502 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-24 18:18:40,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:40,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258041109] [2020-09-24 18:18:40,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:40,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:40,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 18:18:40,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:40,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-24 18:18:40,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:40,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:18:40,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:18:40,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:18:40,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:40,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:40,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:40,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:40,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:18:40,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:40,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258041109] [2020-09-24 18:18:40,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:40,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:18:40,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255703230] [2020-09-24 18:18:40,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:18:40,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:40,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:18:40,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:18:40,795 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 5 states. [2020-09-24 18:18:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:41,011 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2020-09-24 18:18:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:18:41,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-24 18:18:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:41,013 INFO L225 Difference]: With dead ends: 115 [2020-09-24 18:18:41,013 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 18:18:41,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:18:41,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 18:18:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-09-24 18:18:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 18:18:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-24 18:18:41,022 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 38 [2020-09-24 18:18:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:41,022 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-24 18:18:41,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:18:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-24 18:18:41,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 18:18:41,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:41,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:41,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:18:41,025 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:41,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:41,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-24 18:18:41,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:41,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005062109] [2020-09-24 18:18:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:41,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:41,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:18:41,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 18:18:41,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:18:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 18:18:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:18:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:41,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:41,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:41,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:41,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:41,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:18:41,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:41,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:41,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005062109] [2020-09-24 18:18:41,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:41,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:18:41,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696428885] [2020-09-24 18:18:41,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:18:41,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:41,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:18:41,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:18:41,382 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 5 states. [2020-09-24 18:18:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:41,608 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2020-09-24 18:18:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:18:41,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-24 18:18:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:41,610 INFO L225 Difference]: With dead ends: 110 [2020-09-24 18:18:41,610 INFO L226 Difference]: Without dead ends: 107 [2020-09-24 18:18:41,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:18:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-24 18:18:41,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2020-09-24 18:18:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-24 18:18:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-09-24 18:18:41,618 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 42 [2020-09-24 18:18:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:41,619 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-09-24 18:18:41,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:18:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-09-24 18:18:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 18:18:41,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:41,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:41,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:18:41,621 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:41,622 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-24 18:18:41,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:41,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409732260] [2020-09-24 18:18:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:41,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:43,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:43,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 18:18:43,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:18:43,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1764 [2020-09-24 18:18:43,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:18:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:18:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:18:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:43,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:43,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:43,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:43,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:43,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:43,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:18:43,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:43,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:43,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:43,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:43,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:43,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409732260] [2020-09-24 18:18:43,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:43,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 18:18:43,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058417295] [2020-09-24 18:18:43,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:18:43,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:43,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:18:43,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:18:43,597 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 10 states. [2020-09-24 18:18:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:44,151 INFO L93 Difference]: Finished difference Result 157 states and 163 transitions. [2020-09-24 18:18:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:18:44,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-09-24 18:18:44,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:44,153 INFO L225 Difference]: With dead ends: 157 [2020-09-24 18:18:44,153 INFO L226 Difference]: Without dead ends: 155 [2020-09-24 18:18:44,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:18:44,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-24 18:18:44,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 113. [2020-09-24 18:18:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 18:18:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-09-24 18:18:44,173 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 44 [2020-09-24 18:18:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:44,173 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-09-24 18:18:44,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:18:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-09-24 18:18:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 18:18:44,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:44,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:44,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:18:44,177 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:44,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:44,178 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-24 18:18:44,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:44,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906349905] [2020-09-24 18:18:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:44,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:47,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:48,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:49,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:18:49,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:18:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5270 [2020-09-24 18:18:49,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:18:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:18:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:18:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:49,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:49,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:49,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:49,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:49,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:18:49,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:49,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:49,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906349905] [2020-09-24 18:18:49,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:18:49,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:18:49,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450031287] [2020-09-24 18:18:49,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:18:49,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:49,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:18:49,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:18:49,631 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 7 states. [2020-09-24 18:18:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:49,995 INFO L93 Difference]: Finished difference Result 148 states and 153 transitions. [2020-09-24 18:18:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:18:49,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-09-24 18:18:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:49,997 INFO L225 Difference]: With dead ends: 148 [2020-09-24 18:18:49,997 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 18:18:49,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:18:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 18:18:50,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-24 18:18:50,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 18:18:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2020-09-24 18:18:50,005 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 45 [2020-09-24 18:18:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:50,005 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2020-09-24 18:18:50,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:18:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2020-09-24 18:18:50,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 18:18:50,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:50,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:50,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:18:50,012 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:50,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-24 18:18:50,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:50,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828725221] [2020-09-24 18:18:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:50,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:54,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:54,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 18:18:54,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:18:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4153 [2020-09-24 18:18:54,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:18:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:18:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:18:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:54,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:54,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:54,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:54,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:18:54,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:54,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828725221] [2020-09-24 18:18:54,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:54,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 18:18:54,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492014252] [2020-09-24 18:18:54,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:18:54,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:54,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:18:54,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:18:54,393 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand 10 states. [2020-09-24 18:18:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:54,990 INFO L93 Difference]: Finished difference Result 185 states and 192 transitions. [2020-09-24 18:18:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:18:54,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-24 18:18:54,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:54,993 INFO L225 Difference]: With dead ends: 185 [2020-09-24 18:18:54,993 INFO L226 Difference]: Without dead ends: 183 [2020-09-24 18:18:54,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:18:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-24 18:18:54,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 95. [2020-09-24 18:18:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 18:18:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2020-09-24 18:18:54,999 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 54 [2020-09-24 18:18:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:55,000 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2020-09-24 18:18:55,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:18:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2020-09-24 18:18:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 18:18:55,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:55,001 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:55,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:18:55,002 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:55,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:55,002 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-24 18:18:55,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:55,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779764756] [2020-09-24 18:18:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:55,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:55,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:55,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 18:18:55,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:55,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-09-24 18:18:55,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:55,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:18:55,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:18:55,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:18:55,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:56,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:56,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:56,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:56,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:56,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:18:56,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:56,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:56,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779764756] [2020-09-24 18:18:56,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:18:56,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 18:18:56,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666760550] [2020-09-24 18:18:56,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 18:18:56,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:56,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 18:18:56,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:18:56,473 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand 17 states. [2020-09-24 18:18:58,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:58,116 INFO L93 Difference]: Finished difference Result 175 states and 181 transitions. [2020-09-24 18:18:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:18:58,117 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-24 18:18:58,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:58,118 INFO L225 Difference]: With dead ends: 175 [2020-09-24 18:18:58,119 INFO L226 Difference]: Without dead ends: 172 [2020-09-24 18:18:58,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-24 18:18:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-24 18:18:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 128. [2020-09-24 18:18:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-24 18:18:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-09-24 18:18:58,138 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 55 [2020-09-24 18:18:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:58,138 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-09-24 18:18:58,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 18:18:58,139 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-09-24 18:18:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 18:18:58,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:58,140 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:58,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:18:58,140 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:58,141 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-09-24 18:18:58,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:58,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145309140] [2020-09-24 18:18:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:58,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:00,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:00,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 18:19:00,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2547 [2020-09-24 18:19:00,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:19:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:19:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:19:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:01,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:01,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:01,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:01,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:19:01,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:01,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:01,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145309140] [2020-09-24 18:19:01,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:01,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 18:19:01,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897347740] [2020-09-24 18:19:01,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 18:19:01,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:01,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 18:19:01,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-09-24 18:19:01,587 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states. [2020-09-24 18:19:03,008 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-09-24 18:19:03,147 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-09-24 18:19:03,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:03,912 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-09-24 18:19:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 18:19:03,913 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-24 18:19:03,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:03,915 INFO L225 Difference]: With dead ends: 205 [2020-09-24 18:19:03,915 INFO L226 Difference]: Without dead ends: 202 [2020-09-24 18:19:03,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 18:19:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-24 18:19:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2020-09-24 18:19:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-24 18:19:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-09-24 18:19:03,924 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65 [2020-09-24 18:19:03,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:03,925 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-09-24 18:19:03,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 18:19:03,925 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-09-24 18:19:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 18:19:03,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:03,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:03,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:19:03,927 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:03,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:03,927 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-09-24 18:19:03,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:03,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986879856] [2020-09-24 18:19:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:08,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:09,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:09,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 18:19:09,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:19:09,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5255 [2020-09-24 18:19:09,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:19:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 18:19:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 18:19:09,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:09,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:09,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:09,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:09,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:09,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986879856] [2020-09-24 18:19:09,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:09,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 18:19:09,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824713817] [2020-09-24 18:19:09,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 18:19:09,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:09,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 18:19:09,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:19:09,687 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states. [2020-09-24 18:19:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:10,814 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2020-09-24 18:19:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 18:19:10,815 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-24 18:19:10,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:10,816 INFO L225 Difference]: With dead ends: 229 [2020-09-24 18:19:10,816 INFO L226 Difference]: Without dead ends: 207 [2020-09-24 18:19:10,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-24 18:19:10,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-24 18:19:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2020-09-24 18:19:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-24 18:19:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2020-09-24 18:19:10,828 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71 [2020-09-24 18:19:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:10,829 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2020-09-24 18:19:10,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 18:19:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2020-09-24 18:19:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 18:19:10,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:10,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:10,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 18:19:10,831 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:10,831 INFO L82 PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times [2020-09-24 18:19:10,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:10,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112700406] [2020-09-24 18:19:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:14,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:16,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:19:16,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:19:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5608 [2020-09-24 18:19:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:19:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:19:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 18:19:16,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:17,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:17,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:17,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:17,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:17,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:19:17,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:17,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:17,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112700406] [2020-09-24 18:19:17,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:17,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 18:19:17,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819287412] [2020-09-24 18:19:17,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 18:19:17,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:17,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 18:19:17,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:19:17,335 INFO L87 Difference]: Start difference. First operand 168 states and 174 transitions. Second operand 19 states. [2020-09-24 18:19:17,892 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-09-24 18:19:18,030 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-09-24 18:19:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:19,407 INFO L93 Difference]: Finished difference Result 209 states and 216 transitions. [2020-09-24 18:19:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 18:19:19,407 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-09-24 18:19:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:19,409 INFO L225 Difference]: With dead ends: 209 [2020-09-24 18:19:19,410 INFO L226 Difference]: Without dead ends: 163 [2020-09-24 18:19:19,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=261, Invalid=1221, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 18:19:19,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-24 18:19:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 152. [2020-09-24 18:19:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-24 18:19:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2020-09-24 18:19:19,418 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 78 [2020-09-24 18:19:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:19,419 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2020-09-24 18:19:19,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 18:19:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2020-09-24 18:19:19,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 18:19:19,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:19,420 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:19:19,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 18:19:19,421 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:19,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1069144387, now seen corresponding path program 2 times [2020-09-24 18:19:19,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:19,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581842284] [2020-09-24 18:19:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:21,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:21,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:19:21,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2251 [2020-09-24 18:19:21,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:19:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:19:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:19:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0