/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:24,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:24,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:24,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:24,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:24,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:24,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:24,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:24,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:24,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:24,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:24,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:24,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:24,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:24,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:24,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:24,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:24,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:24,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:24,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:24,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:24,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:24,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:24,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:24,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:24,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:24,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:24,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:24,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:24,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:24,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:24,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:24,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:24,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:24,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:24,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:24,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:24,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:24,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:24,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:24,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:24,500 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 13:28:24,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:24,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:24,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:24,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:24,553 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:24,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:24,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:24,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:24,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:24,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:24,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:24,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:24,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:24,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:24,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:24,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:24,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:24,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:24,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:24,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:24,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:24,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:24,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:24,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:24,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:24,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:24,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:24,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:24,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:24,560 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:28:25,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:25,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:25,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:25,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:25,045 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:25,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-25 13:28:25,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f7e1db71/c3c4b898eee042eeafa1dd0ef7b9a8f8/FLAGf41ac334c [2020-09-25 13:28:25,765 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:25,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-25 13:28:25,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f7e1db71/c3c4b898eee042eeafa1dd0ef7b9a8f8/FLAGf41ac334c [2020-09-25 13:28:26,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f7e1db71/c3c4b898eee042eeafa1dd0ef7b9a8f8 [2020-09-25 13:28:26,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:26,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:26,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:26,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:26,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:26,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:26" (1/1) ... [2020-09-25 13:28:26,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30002d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26, skipping insertion in model container [2020-09-25 13:28:26,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:26" (1/1) ... [2020-09-25 13:28:26,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:26,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:26,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:26,678 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:26,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:26,825 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:26,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26 WrapperNode [2020-09-25 13:28:26,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:26,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:26,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:26,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:26,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26" (1/1) ... [2020-09-25 13:28:26,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26" (1/1) ... [2020-09-25 13:28:26,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26" (1/1) ... [2020-09-25 13:28:26,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26" (1/1) ... [2020-09-25 13:28:26,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26" (1/1) ... [2020-09-25 13:28:26,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26" (1/1) ... [2020-09-25 13:28:26,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26" (1/1) ... [2020-09-25 13:28:26,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:26,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:26,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:26,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:26,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:26,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:26,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:26,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 13:28:26,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 13:28:26,987 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 13:28:26,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 13:28:26,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 13:28:26,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 13:28:26,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 13:28:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 13:28:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:28:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:28:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:28:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:28:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:28:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:28:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:28:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:28:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:28:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:28:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:28:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:28:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:28:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:28:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:28:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:28:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:28:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:28:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:28:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:28:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:28:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:28:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:28:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:28:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:28:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:28:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:28:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:28:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:28:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:28:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:28:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:28:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:28:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:28:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:28:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:28:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:28:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:28:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:28:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:28:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:28:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:28:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:28:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:28:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:28:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:28:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:28:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:28:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:28:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:28:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:28:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:28:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:28:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:28:27,002 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:28:27,002 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:28:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:28:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:28:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 13:28:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:28:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:28:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 13:28:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:28:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 13:28:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:28:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:28:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:28:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:28:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:28:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:28:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:28:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:28:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:28:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:28:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:28:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:28:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:28:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:28:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:28:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:28:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:28:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:28:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:28:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:28:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:28:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:28:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:28:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:28:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:28:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:28:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:28:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:28:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:28:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:28:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:28:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:28:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:28:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:28:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:28:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:28:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:28:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:28:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 13:28:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 13:28:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:28:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:28:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 13:28:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:28:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 13:28:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:28:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:27,368 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 13:28:27,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:27,581 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 13:28:27,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:27 BoogieIcfgContainer [2020-09-25 13:28:27,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:27,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:27,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:27,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:27,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:26" (1/3) ... [2020-09-25 13:28:27,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b7957c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:27, skipping insertion in model container [2020-09-25 13:28:27,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:26" (2/3) ... [2020-09-25 13:28:27,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b7957c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:27, skipping insertion in model container [2020-09-25 13:28:27,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:27" (3/3) ... [2020-09-25 13:28:27,596 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-09-25 13:28:27,608 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:27,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:28:27,643 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:28:27,671 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:27,671 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:27,672 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:27,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:27,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:27,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:27,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:27,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-25 13:28:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 13:28:27,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:27,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:27,706 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:27,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:27,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1731717969, now seen corresponding path program 1 times [2020-09-25 13:28:27,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:27,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232602887] [2020-09-25 13:28:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:28,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:28,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 13:28:28,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:28,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-09-25 13:28:28,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:28,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:28,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:28:28,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:28:28,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:28,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:28,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:28,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:28,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:28:28,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:28,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:28,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:28,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:28,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:28:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:28,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 13:28:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:28,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:28:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 13:28:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:28,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:28,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:28,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:28,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:28,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:28:28,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:28,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:28,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:28,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:28,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:28,635 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 13:28:28,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232602887] [2020-09-25 13:28:28,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:28,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:28:28,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217217351] [2020-09-25 13:28:28,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:28,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:28,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:28,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:28,668 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 7 states. [2020-09-25 13:28:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:29,259 INFO L93 Difference]: Finished difference Result 186 states and 229 transitions. [2020-09-25 13:28:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:28:29,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-09-25 13:28:29,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:29,275 INFO L225 Difference]: With dead ends: 186 [2020-09-25 13:28:29,275 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 13:28:29,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:28:29,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 13:28:29,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 67. [2020-09-25 13:28:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 13:28:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-09-25 13:28:29,355 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 29 [2020-09-25 13:28:29,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:29,355 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-09-25 13:28:29,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:29,356 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-09-25 13:28:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 13:28:29,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:29,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:29,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:29,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:29,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2090477770, now seen corresponding path program 1 times [2020-09-25 13:28:29,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:29,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224257749] [2020-09-25 13:28:29,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:29,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:28:32,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:28:32,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3064 [2020-09-25 13:28:32,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:28:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:32,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:28:32,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:28:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:32,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:28:32,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:32,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:28:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:32,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:28:32,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:32,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:32,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224257749] [2020-09-25 13:28:32,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:32,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:28:32,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502399777] [2020-09-25 13:28:32,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:28:32,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:32,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:28:32,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:28:32,593 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 8 states. [2020-09-25 13:28:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:33,171 INFO L93 Difference]: Finished difference Result 172 states and 189 transitions. [2020-09-25 13:28:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:28:33,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-25 13:28:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:33,174 INFO L225 Difference]: With dead ends: 172 [2020-09-25 13:28:33,175 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 13:28:33,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:28:33,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 13:28:33,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2020-09-25 13:28:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 13:28:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-09-25 13:28:33,191 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 41 [2020-09-25 13:28:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:33,191 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-09-25 13:28:33,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:28:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-09-25 13:28:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 13:28:33,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:33,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:33,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:33,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:33,194 INFO L82 PathProgramCache]: Analyzing trace with hash 360366586, now seen corresponding path program 1 times [2020-09-25 13:28:33,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:33,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138716557] [2020-09-25 13:28:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:35,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:28:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2783 [2020-09-25 13:28:35,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:35,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:28:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:36,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:36,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:36,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:36,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:36,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:28:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:28:36,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 13:28:36,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:28:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 13:28:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:36,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:36,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:36,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,229 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 13:28:36,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138716557] [2020-09-25 13:28:36,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:36,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:28:36,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422991024] [2020-09-25 13:28:36,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:28:36,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:36,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:28:36,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:36,232 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2020-09-25 13:28:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:36,640 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2020-09-25 13:28:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:28:36,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-09-25 13:28:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:36,647 INFO L225 Difference]: With dead ends: 129 [2020-09-25 13:28:36,647 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 13:28:36,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:28:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 13:28:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 83. [2020-09-25 13:28:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 13:28:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-09-25 13:28:36,678 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 44 [2020-09-25 13:28:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:36,679 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-09-25 13:28:36,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:28:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-09-25 13:28:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 13:28:36,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:36,682 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:28:36,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:28:36,682 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:36,686 INFO L82 PathProgramCache]: Analyzing trace with hash -829611268, now seen corresponding path program 1 times [2020-09-25 13:28:36,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:36,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723592010] [2020-09-25 13:28:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:28:36,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 13:28:36,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:28:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:36,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:36,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:36,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:36,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:36,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:28:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:36,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:28:36,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:28:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:28:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:36,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:36,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:36,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:36,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723592010] [2020-09-25 13:28:36,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:36,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:28:36,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773925177] [2020-09-25 13:28:36,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:28:36,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:36,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:28:36,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:36,996 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 9 states. [2020-09-25 13:28:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:37,591 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2020-09-25 13:28:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:28:37,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 13:28:37,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:37,593 INFO L225 Difference]: With dead ends: 140 [2020-09-25 13:28:37,593 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 13:28:37,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:28:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 13:28:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 92. [2020-09-25 13:28:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 13:28:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2020-09-25 13:28:37,605 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 45 [2020-09-25 13:28:37,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:37,606 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2020-09-25 13:28:37,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:28:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2020-09-25 13:28:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:28:37,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:37,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:37,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:28:37,608 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:37,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1801872195, now seen corresponding path program 2 times [2020-09-25 13:28:37,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:37,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880698249] [2020-09-25 13:28:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:37,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:40,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 13:28:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:40,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2482 [2020-09-25 13:28:40,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:40,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:28:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:28:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:40,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:40,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:40,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:40,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:40,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:40,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:40,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:40,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:28:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:40,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:40,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:28:40,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 13:28:40,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:40,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:28:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:28:40,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:40,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 13:28:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:40,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:40,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:40,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:40,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:40,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880698249] [2020-09-25 13:28:40,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:40,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:28:40,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254810870] [2020-09-25 13:28:40,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:28:40,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:40,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:28:40,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:28:40,408 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 11 states. [2020-09-25 13:28:40,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:40,886 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2020-09-25 13:28:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:28:40,886 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-25 13:28:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:40,888 INFO L225 Difference]: With dead ends: 147 [2020-09-25 13:28:40,888 INFO L226 Difference]: Without dead ends: 127 [2020-09-25 13:28:40,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:28:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-25 13:28:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 101. [2020-09-25 13:28:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 13:28:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-09-25 13:28:40,900 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 53 [2020-09-25 13:28:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:40,900 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-09-25 13:28:40,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:28:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-09-25 13:28:40,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:28:40,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:40,902 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:40,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:28:40,902 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:40,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:40,903 INFO L82 PathProgramCache]: Analyzing trace with hash 840072530, now seen corresponding path program 1 times [2020-09-25 13:28:40,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:40,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399763366] [2020-09-25 13:28:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:41,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:41,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:41,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 13:28:41,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:28:41,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-25 13:28:41,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:41,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:28:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:42,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:42,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:42,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:42,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:42,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:42,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:42,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 13:28:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:42,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:28:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:42,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:42,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 13:28:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:42,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:42,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:42,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:42,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:42,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:42,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:42,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:42,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:42,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399763366] [2020-09-25 13:28:42,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:42,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:28:42,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95353075] [2020-09-25 13:28:42,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:28:42,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:42,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:28:42,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:28:42,068 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 10 states. [2020-09-25 13:28:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:42,685 INFO L93 Difference]: Finished difference Result 230 states and 252 transitions. [2020-09-25 13:28:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:28:42,685 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-09-25 13:28:42,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:42,687 INFO L225 Difference]: With dead ends: 230 [2020-09-25 13:28:42,687 INFO L226 Difference]: Without dead ends: 158 [2020-09-25 13:28:42,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:28:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-25 13:28:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 108. [2020-09-25 13:28:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 13:28:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-09-25 13:28:42,699 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 53 [2020-09-25 13:28:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:42,700 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-09-25 13:28:42,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:28:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-09-25 13:28:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 13:28:42,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:42,701 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:28:42,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:28:42,702 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:42,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:42,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2096888703, now seen corresponding path program 1 times [2020-09-25 13:28:42,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:42,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24558027] [2020-09-25 13:28:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:47,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:28:47,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:28:47,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:47,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:28:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:28:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:47,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:47,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:47,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:47,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:47,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:47,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:47,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:47,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:47,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:47,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:47,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:47,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:28:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:47,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:28:47,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 13:28:47,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:47,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:28:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:47,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 13:28:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:47,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:47,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:47,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:47,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:47,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:47,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24558027] [2020-09-25 13:28:47,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:47,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:28:47,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687368795] [2020-09-25 13:28:47,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:28:47,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:47,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:28:47,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:28:47,924 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 11 states. [2020-09-25 13:28:48,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:48,436 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2020-09-25 13:28:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:28:48,437 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-09-25 13:28:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:48,438 INFO L225 Difference]: With dead ends: 139 [2020-09-25 13:28:48,439 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 13:28:48,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:28:48,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 13:28:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 102. [2020-09-25 13:28:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 13:28:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2020-09-25 13:28:48,451 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 54 [2020-09-25 13:28:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:48,451 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2020-09-25 13:28:48,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:28:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2020-09-25 13:28:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 13:28:48,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:48,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:48,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:28:48,455 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:48,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1727079450, now seen corresponding path program 3 times [2020-09-25 13:28:48,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:48,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448942402] [2020-09-25 13:28:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:49,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 13:28:49,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-09-25 13:28:49,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:49,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:28:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 13:28:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:28:49,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:49,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:49,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:49,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:49,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:49,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:49,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:49,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:28:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:49,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:28:49,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 13:28:49,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:49,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:28:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:28:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:49,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:49,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:49,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:28:49,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:49,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:28:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 13:28:49,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448942402] [2020-09-25 13:28:49,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:49,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:28:49,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077110385] [2020-09-25 13:28:49,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:28:49,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:49,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:28:49,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:28:49,544 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 11 states. [2020-09-25 13:28:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:49,986 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2020-09-25 13:28:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:28:49,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-09-25 13:28:49,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:49,988 INFO L225 Difference]: With dead ends: 116 [2020-09-25 13:28:49,988 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 13:28:49,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:28:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 13:28:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2020-09-25 13:28:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 13:28:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2020-09-25 13:28:50,004 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 62 [2020-09-25 13:28:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:50,004 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2020-09-25 13:28:50,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:28:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2020-09-25 13:28:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:28:50,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:50,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:50,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:28:50,008 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:50,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1187742581, now seen corresponding path program 1 times [2020-09-25 13:28:50,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:50,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793901484] [2020-09-25 13:28:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:51,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:28:51,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:51,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-09-25 13:28:51,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:51,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:28:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:28:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:28:51,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:51,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:51,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:51,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:51,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:51,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:28:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:51,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:51,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:28:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-25 13:28:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:51,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:28:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:28:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:51,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:51,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 13:28:51,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:51,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:51,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:51,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:51,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:28:51,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:28:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:28:51,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793901484] [2020-09-25 13:28:51,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:51,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:28:51,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497857526] [2020-09-25 13:28:51,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:28:51,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:51,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:28:51,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:28:51,871 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 15 states. [2020-09-25 13:28:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:52,848 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2020-09-25 13:28:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:28:52,849 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-09-25 13:28:52,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:52,850 INFO L225 Difference]: With dead ends: 123 [2020-09-25 13:28:52,851 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 13:28:52,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2020-09-25 13:28:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 13:28:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2020-09-25 13:28:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 13:28:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions. [2020-09-25 13:28:52,859 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 69 [2020-09-25 13:28:52,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:52,860 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 117 transitions. [2020-09-25 13:28:52,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:28:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions. [2020-09-25 13:28:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 13:28:52,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:52,861 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:52,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:28:52,861 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:52,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:52,862 INFO L82 PathProgramCache]: Analyzing trace with hash 979580858, now seen corresponding path program 2 times [2020-09-25 13:28:52,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:52,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873353546] [2020-09-25 13:28:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:52,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:54,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:56,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:57,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 13:28:57,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:28:57,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:28:57,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:57,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:28:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 13:28:57,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:57,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:57,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:57,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:57,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:57,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:28:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:28:58,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 13:28:58,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:58,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 13:28:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:58,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:28:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:58,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:58,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:28:58,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:58,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 13:28:58,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:58,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:28:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:28:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 13:28:58,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873353546] [2020-09-25 13:28:58,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:58,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:28:58,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712099502] [2020-09-25 13:28:58,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:28:58,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:58,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:28:58,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:28:58,435 INFO L87 Difference]: Start difference. First operand 110 states and 117 transitions. Second operand 12 states. [2020-09-25 13:28:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:59,096 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2020-09-25 13:28:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:28:59,097 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-09-25 13:28:59,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:59,099 INFO L225 Difference]: With dead ends: 135 [2020-09-25 13:28:59,099 INFO L226 Difference]: Without dead ends: 130 [2020-09-25 13:28:59,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:28:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-25 13:28:59,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 123. [2020-09-25 13:28:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-25 13:28:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2020-09-25 13:28:59,109 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 76 [2020-09-25 13:28:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:59,110 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2020-09-25 13:28:59,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:28:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2020-09-25 13:28:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 13:28:59,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:59,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:59,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:28:59,112 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:59,112 INFO L82 PathProgramCache]: Analyzing trace with hash -446623556, now seen corresponding path program 1 times [2020-09-25 13:28:59,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:59,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350867471] [2020-09-25 13:28:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:59,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:59,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:28:59,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:59,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 13:28:59,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:59,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:59,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:28:59,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:59,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:28:59,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:59,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:59,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:59,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:59,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:59,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:59,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:59,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:28:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:59,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:59,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:59,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:28:59,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:59,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 13:28:59,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:59,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:28:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:28:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:59,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:28:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:59,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:59,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:28:59,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:59,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:28:59,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:59,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:28:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:28:59,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350867471] [2020-09-25 13:28:59,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:59,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:28:59,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134064599] [2020-09-25 13:28:59,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:28:59,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:59,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:28:59,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:28:59,754 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand 13 states. [2020-09-25 13:29:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:00,252 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2020-09-25 13:29:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:29:00,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-09-25 13:29:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:00,255 INFO L225 Difference]: With dead ends: 173 [2020-09-25 13:29:00,255 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 13:29:00,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2020-09-25 13:29:00,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 13:29:00,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2020-09-25 13:29:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 13:29:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2020-09-25 13:29:00,265 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 77 [2020-09-25 13:29:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:00,265 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2020-09-25 13:29:00,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:29:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2020-09-25 13:29:00,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 13:29:00,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:00,266 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:00,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:29:00,267 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:00,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1305863211, now seen corresponding path program 3 times [2020-09-25 13:29:00,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:00,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725155186] [2020-09-25 13:29:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:29:00,287 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:29:00,287 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:29:00,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:29:00,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:29:00 BoogieIcfgContainer [2020-09-25 13:29:00,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:29:00,315 INFO L168 Benchmark]: Toolchain (without parser) took 34244.74 ms. Allocated memory was 140.0 MB in the beginning and 417.9 MB in the end (delta: 277.9 MB). Free memory was 100.9 MB in the beginning and 105.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 272.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:29:00,315 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-25 13:29:00,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.53 ms. Allocated memory was 140.0 MB in the beginning and 206.0 MB in the end (delta: 66.1 MB). Free memory was 100.0 MB in the beginning and 171.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:29:00,317 INFO L168 Benchmark]: Boogie Preprocessor took 70.39 ms. Allocated memory is still 206.0 MB. Free memory was 171.4 MB in the beginning and 168.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:29:00,318 INFO L168 Benchmark]: RCFGBuilder took 688.07 ms. Allocated memory is still 206.0 MB. Free memory was 168.5 MB in the beginning and 122.9 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:29:00,318 INFO L168 Benchmark]: TraceAbstraction took 32723.34 ms. Allocated memory was 206.0 MB in the beginning and 417.9 MB in the end (delta: 211.8 MB). Free memory was 122.0 MB in the beginning and 105.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 227.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:29:00,323 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 754.53 ms. Allocated memory was 140.0 MB in the beginning and 206.0 MB in the end (delta: 66.1 MB). Free memory was 100.0 MB in the beginning and 171.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.39 ms. Allocated memory is still 206.0 MB. Free memory was 171.4 MB in the beginning and 168.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 688.07 ms. Allocated memory is still 206.0 MB. Free memory was 168.5 MB in the beginning and 122.9 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32723.34 ms. Allocated memory was 206.0 MB in the beginning and 417.9 MB in the end (delta: 211.8 MB). Free memory was 122.0 MB in the beginning and 105.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 227.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] RET, EXPR sll_create(len + 1) [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] RET, EXPR sll_length(s) [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.6s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 688 SDtfs, 1608 SDslu, 1818 SDs, 0 SdLazy, 3744 SolverSat, 254 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 264 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 240 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 25.3s InterpolantComputationTime, 686 NumberOfCodeBlocks, 686 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 592 ConstructedInterpolants, 0 QuantifiedInterpolants, 116422 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 103/167 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...