/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:36,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:36,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:36,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:36,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:36,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:36,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:36,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:36,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:36,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:36,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:36,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:36,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:36,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:36,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:36,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:37,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:37,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:37,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:37,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:37,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:37,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:37,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:37,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:37,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:37,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:37,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:37,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:37,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:37,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:37,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:37,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:37,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:37,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:37,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:37,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:37,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:37,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:37,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:37,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:37,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:37,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:20:37,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:37,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:37,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:37,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:37,102 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:37,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:37,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:37,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:37,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:37,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:37,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:37,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:37,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:37,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:37,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:37,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:37,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:37,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:37,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:37,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:37,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:37,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:37,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:37,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:37,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:37,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:37,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:37,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:37,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:37,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:20:37,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:20:37,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:20:37,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:20:37,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:20:37,656 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:20:37,657 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 12:20:37,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad685e10b/7e78747c3a574093b9371477a3a1be26/FLAGa16dc6f5b [2020-09-25 12:20:38,351 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:20:38,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 12:20:38,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad685e10b/7e78747c3a574093b9371477a3a1be26/FLAGa16dc6f5b [2020-09-25 12:20:38,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad685e10b/7e78747c3a574093b9371477a3a1be26 [2020-09-25 12:20:38,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:20:38,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:20:38,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:38,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:20:38,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:20:38,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:38" (1/1) ... [2020-09-25 12:20:38,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601c5801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:38, skipping insertion in model container [2020-09-25 12:20:38,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:38" (1/1) ... [2020-09-25 12:20:38,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:20:38,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:20:39,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:39,241 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:20:39,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:39,391 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:20:39,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39 WrapperNode [2020-09-25 12:20:39,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:39,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:20:39,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:20:39,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:20:39,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39" (1/1) ... [2020-09-25 12:20:39,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39" (1/1) ... [2020-09-25 12:20:39,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39" (1/1) ... [2020-09-25 12:20:39,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39" (1/1) ... [2020-09-25 12:20:39,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39" (1/1) ... [2020-09-25 12:20:39,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39" (1/1) ... [2020-09-25 12:20:39,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39" (1/1) ... [2020-09-25 12:20:39,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:20:39,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:20:39,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:20:39,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:20:39,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:20:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:20:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 12:20:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 12:20:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 12:20:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 12:20:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 12:20:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 12:20:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-25 12:20:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-25 12:20:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:20:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:20:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 12:20:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 12:20:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 12:20:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 12:20:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 12:20:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 12:20:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 12:20:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 12:20:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 12:20:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 12:20:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 12:20:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 12:20:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 12:20:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 12:20:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 12:20:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 12:20:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 12:20:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 12:20:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 12:20:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 12:20:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 12:20:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 12:20:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 12:20:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 12:20:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 12:20:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 12:20:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 12:20:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 12:20:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 12:20:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 12:20:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 12:20:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 12:20:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 12:20:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 12:20:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 12:20:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 12:20:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 12:20:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 12:20:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 12:20:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 12:20:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 12:20:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 12:20:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 12:20:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 12:20:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 12:20:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 12:20:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 12:20:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 12:20:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 12:20:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 12:20:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 12:20:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 12:20:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:20:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 12:20:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 12:20:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 12:20:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 12:20:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 12:20:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 12:20:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 12:20:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 12:20:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:20:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 12:20:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 12:20:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 12:20:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:20:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 12:20:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 12:20:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 12:20:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 12:20:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 12:20:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 12:20:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 12:20:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 12:20:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 12:20:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 12:20:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 12:20:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 12:20:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 12:20:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 12:20:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 12:20:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 12:20:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 12:20:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 12:20:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 12:20:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 12:20:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 12:20:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 12:20:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 12:20:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 12:20:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 12:20:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 12:20:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 12:20:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 12:20:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 12:20:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 12:20:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 12:20:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 12:20:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 12:20:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 12:20:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 12:20:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 12:20:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 12:20:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 12:20:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 12:20:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 12:20:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 12:20:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:20:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:20:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:20:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 12:20:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 12:20:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:20:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:20:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-25 12:20:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:20:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-25 12:20:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:20:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:20:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:20:40,042 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 12:20:40,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:20:40,212 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 12:20:40,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:40 BoogieIcfgContainer [2020-09-25 12:20:40,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:20:40,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:20:40,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:20:40,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:20:40,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:38" (1/3) ... [2020-09-25 12:20:40,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480477a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:40, skipping insertion in model container [2020-09-25 12:20:40,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:39" (2/3) ... [2020-09-25 12:20:40,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480477a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:40, skipping insertion in model container [2020-09-25 12:20:40,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:40" (3/3) ... [2020-09-25 12:20:40,229 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-25 12:20:40,242 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:20:40,253 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:20:40,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:20:40,313 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:20:40,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:20:40,314 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:20:40,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:20:40,314 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:20:40,314 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:20:40,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:20:40,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:20:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 12:20:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 12:20:40,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:40,356 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] [2020-09-25 12:20:40,357 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:40,365 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-25 12:20:40,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:40,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024824888] [2020-09-25 12:20:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:40,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:40,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:20:41,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:20:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-09-25 12:20:41,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:20:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:20:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:20:41,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:41,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:20:41,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:41,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:41,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:41,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 12:20:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:41,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:20:41,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:41,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 12:20:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:41,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:20:41,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:20:41,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 12:20:41,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:41,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:41,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024824888] [2020-09-25 12:20:41,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:41,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:20:41,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947956379] [2020-09-25 12:20:41,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:41,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:41,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:41,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:41,698 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 6 states. [2020-09-25 12:20:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:42,395 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2020-09-25 12:20:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:20:42,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 12:20:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:42,414 INFO L225 Difference]: With dead ends: 242 [2020-09-25 12:20:42,415 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 12:20:42,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:20:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 12:20:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-25 12:20:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 12:20:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-25 12:20:42,490 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-25 12:20:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:42,490 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-25 12:20:42,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-25 12:20:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:20:42,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:42,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:42,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:20:42,494 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-25 12:20:42,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:42,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493883929] [2020-09-25 12:20:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:42,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:47,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 12:20:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:20:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:20:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:47,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:20:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:20:47,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:47,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 12:20:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:47,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:47,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:47,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 12:20:47,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:47,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:47,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:20:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:47,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:47,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:47,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:47,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 12:20:47,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:47,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:47,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:47,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:47,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:47,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:47,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 12:20:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:47,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:47,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:47,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:20:47,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:47,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:47,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:20:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:47,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493883929] [2020-09-25 12:20:47,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:47,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:20:47,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936647617] [2020-09-25 12:20:47,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:20:47,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:47,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:20:47,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:20:47,882 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 9 states. [2020-09-25 12:20:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:48,564 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2020-09-25 12:20:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:20:48,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 12:20:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:48,573 INFO L225 Difference]: With dead ends: 175 [2020-09-25 12:20:48,574 INFO L226 Difference]: Without dead ends: 148 [2020-09-25 12:20:48,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:20:48,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-25 12:20:48,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 91. [2020-09-25 12:20:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 12:20:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2020-09-25 12:20:48,605 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 51 [2020-09-25 12:20:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:48,605 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2020-09-25 12:20:48,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:20:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2020-09-25 12:20:48,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 12:20:48,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:48,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:48,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:20:48,612 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:48,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1075395321, now seen corresponding path program 2 times [2020-09-25 12:20:48,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:48,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672261956] [2020-09-25 12:20:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:48,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:53,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:20:53,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:20:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:20:53,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:53,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:20:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:20:53,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:53,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:53,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:20:53,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:53,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:53,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:20:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 12:20:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:53,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:53,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 12:20:53,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:53,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:53,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:53,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:20:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:53,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:53,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:53,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:20:53,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:53,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:53,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:53,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:53,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:53,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:20:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:53,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:53,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:20:53,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:53,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:53,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:53,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:20:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:53,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:20:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:20:53,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:53,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:20:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 12:20:53,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672261956] [2020-09-25 12:20:53,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:53,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 12:20:53,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786705010] [2020-09-25 12:20:53,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:20:53,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:53,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:20:53,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:20:53,937 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand 9 states. [2020-09-25 12:20:54,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:54,586 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2020-09-25 12:20:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:20:54,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-09-25 12:20:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:54,590 INFO L225 Difference]: With dead ends: 185 [2020-09-25 12:20:54,590 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 12:20:54,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:20:54,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 12:20:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 100. [2020-09-25 12:20:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 12:20:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2020-09-25 12:20:54,613 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 64 [2020-09-25 12:20:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:54,613 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2020-09-25 12:20:54,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:20:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2020-09-25 12:20:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:20:54,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:54,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:54,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:20:54,617 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:54,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:54,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1251789089, now seen corresponding path program 1 times [2020-09-25 12:20:54,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:54,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011959091] [2020-09-25 12:20:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:59,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 12:20:59,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:20:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:20:59,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:59,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:20:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:20:59,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:59,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:59,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:59,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:59,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 12:20:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:59,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:59,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:20:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:59,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:20:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:59,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:59,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:59,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:20:59,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:59,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:20:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:59,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:20:59,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:59,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:20:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:59,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:20:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:20:59,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:59,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:20:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:20:59,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011959091] [2020-09-25 12:20:59,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:59,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 12:20:59,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357135495] [2020-09-25 12:20:59,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:20:59,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:59,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:20:59,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:20:59,858 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand 9 states. [2020-09-25 12:21:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:00,342 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2020-09-25 12:21:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:21:00,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-09-25 12:21:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:00,344 INFO L225 Difference]: With dead ends: 177 [2020-09-25 12:21:00,344 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 12:21:00,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:21:00,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 12:21:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2020-09-25 12:21:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 12:21:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-09-25 12:21:00,371 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 71 [2020-09-25 12:21:00,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:00,371 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-09-25 12:21:00,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:21:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-09-25 12:21:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 12:21:00,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:00,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:00,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:21:00,374 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:00,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1557630765, now seen corresponding path program 1 times [2020-09-25 12:21:00,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:00,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579189984] [2020-09-25 12:21:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:00,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:01,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:01,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 12:21:05,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:21:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:21:05,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:21:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:21:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 12:21:05,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:05,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:05,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:21:05,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 12:21:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:21:05,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 12:21:05,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:21:05,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:21:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:21:05,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:05,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:21:05,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:21:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 12:21:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:21:05,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:21:05,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:21:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:05,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 12:21:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:21:05,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:21:05,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:21:05,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 12:21:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:21:05,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:21:05,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:21:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:21:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 12:21:05,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579189984] [2020-09-25 12:21:05,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:05,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:21:05,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50115802] [2020-09-25 12:21:05,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:21:05,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:05,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:21:05,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:21:05,967 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand 13 states. [2020-09-25 12:21:06,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:06,685 INFO L93 Difference]: Finished difference Result 178 states and 194 transitions. [2020-09-25 12:21:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:21:06,685 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-09-25 12:21:06,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:06,687 INFO L225 Difference]: With dead ends: 178 [2020-09-25 12:21:06,688 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 12:21:06,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:21:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 12:21:06,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2020-09-25 12:21:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 12:21:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-09-25 12:21:06,714 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 89 [2020-09-25 12:21:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:06,715 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-09-25 12:21:06,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:21:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-09-25 12:21:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 12:21:06,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:06,724 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 12:21:06,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:21:06,724 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:06,725 INFO L82 PathProgramCache]: Analyzing trace with hash -892358661, now seen corresponding path program 2 times [2020-09-25 12:21:06,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:06,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132011964] [2020-09-25 12:21:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:06,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 12:21:13,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:21:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6262 [2020-09-25 12:21:13,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-09-25 12:21:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:21:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 12:21:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:13,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:13,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:13,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:21:13,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:13,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 12:21:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:15,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:15,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:21:15,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1420 [2020-09-25 12:21:15,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:15,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:15,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 12:21:15,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:15,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:21:15,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:15,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:21:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:15,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:15,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:21:15,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 12:21:15,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:15,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:21:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:21:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:16,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 12:21:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:16,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:21:16,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 12:21:16,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:16,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:21:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:21:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:16,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 12:21:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:16,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:21:16,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 12:21:16,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:16,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:21:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:21:16,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 12:21:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:21:17,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 12:21:17,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:21:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:21:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:17,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 12:21:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:21:17,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:17,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 12:21:17,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:21:17,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:17,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:21:17,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:21:18,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132011964] [2020-09-25 12:21:18,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:18,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-09-25 12:21:18,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066686670] [2020-09-25 12:21:18,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-25 12:21:18,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:18,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-25 12:21:18,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1871, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 12:21:18,140 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 45 states.