/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:06:58,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:06:58,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:06:59,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:06:59,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:06:59,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:06:59,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:06:59,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:06:59,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:06:59,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:06:59,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:06:59,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:06:59,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:06:59,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:06:59,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:06:59,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:06:59,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:06:59,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:06:59,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:06:59,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:06:59,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:06:59,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:06:59,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:06:59,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:06:59,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:06:59,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:06:59,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:06:59,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:06:59,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:06:59,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:06:59,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:06:59,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:06:59,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:06:59,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:06:59,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:06:59,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:06:59,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:06:59,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:06:59,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:06:59,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:06:59,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:06:59,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:06:59,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:06:59,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:06:59,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:06:59,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:06:59,092 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:06:59,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:06:59,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:06:59,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:06:59,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:06:59,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:06:59,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:06:59,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:06:59,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:06:59,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:06:59,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:06:59,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:06:59,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:06:59,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:06:59,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:06:59,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:06:59,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:06:59,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:06:59,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:06:59,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:06:59,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:06:59,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:06:59,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:06:59,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:06:59,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:06:59,101 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;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;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;log-additional-information=true; [2020-09-24 17:06:59,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:06:59,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:06:59,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:06:59,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:06:59,626 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:06:59,627 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-24 17:06:59,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d738d0c8a/fa450ffa600b4bfa948c5ba2898552d1/FLAGa584f05af [2020-09-24 17:07:00,406 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:07:00,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-24 17:07:00,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d738d0c8a/fa450ffa600b4bfa948c5ba2898552d1/FLAGa584f05af [2020-09-24 17:07:00,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d738d0c8a/fa450ffa600b4bfa948c5ba2898552d1 [2020-09-24 17:07:00,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:07:00,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:07:00,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:00,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:07:00,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:07:00,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:00" (1/1) ... [2020-09-24 17:07:00,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b50498e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:00, skipping insertion in model container [2020-09-24 17:07:00,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:00" (1/1) ... [2020-09-24 17:07:00,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:07:00,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:07:01,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:01,255 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:07:01,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:01,417 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:07:01,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01 WrapperNode [2020-09-24 17:07:01,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:01,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:07:01,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:07:01,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:07:01,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01" (1/1) ... [2020-09-24 17:07:01,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01" (1/1) ... [2020-09-24 17:07:01,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01" (1/1) ... [2020-09-24 17:07:01,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01" (1/1) ... [2020-09-24 17:07:01,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01" (1/1) ... [2020-09-24 17:07:01,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01" (1/1) ... [2020-09-24 17:07:01,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01" (1/1) ... [2020-09-24 17:07:01,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:07:01,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:07:01,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:07:01,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:07:01,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:07:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:07:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:07:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 17:07:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 17:07:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-24 17:07:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-09-24 17:07:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-09-24 17:07:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-09-24 17:07:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-09-24 17:07:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-09-24 17:07:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:07:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:07:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 17:07:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 17:07:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 17:07:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 17:07:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 17:07:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 17:07:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 17:07:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 17:07:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 17:07:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 17:07:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 17:07:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 17:07:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 17:07:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 17:07:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 17:07:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 17:07:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 17:07:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 17:07:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 17:07:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 17:07:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 17:07:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 17:07:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 17:07:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 17:07:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 17:07:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 17:07:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 17:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 17:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 17:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 17:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 17:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 17:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 17:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 17:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 17:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 17:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 17:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 17:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 17:07:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 17:07:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 17:07:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 17:07:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 17:07:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 17:07:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 17:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 17:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 17:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 17:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 17:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 17:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 17:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 17:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 17:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 17:07:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 17:07:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 17:07:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 17:07:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:07:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 17:07:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 17:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 17:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 17:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 17:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 17:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 17:07:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 17:07:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 17:07:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 17:07:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 17:07:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 17:07:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 17:07:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 17:07:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 17:07:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 17:07:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 17:07:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 17:07:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 17:07:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 17:07:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 17:07:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 17:07:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 17:07:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 17:07:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 17:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 17:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 17:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 17:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 17:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 17:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 17:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 17:07:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 17:07:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 17:07:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 17:07:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 17:07:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 17:07:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 17:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 17:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 17:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-24 17:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-09-24 17:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:07:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:07:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-09-24 17:07:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:07:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:07:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:07:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-09-24 17:07:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-09-24 17:07:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-09-24 17:07:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:07:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:07:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:07:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:07:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:07:02,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:07:02,658 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-24 17:07:02,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:02 BoogieIcfgContainer [2020-09-24 17:07:02,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:07:02,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:07:02,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:07:02,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:07:02,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:07:00" (1/3) ... [2020-09-24 17:07:02,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae575c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:02, skipping insertion in model container [2020-09-24 17:07:02,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:01" (2/3) ... [2020-09-24 17:07:02,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae575c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:02, skipping insertion in model container [2020-09-24 17:07:02,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:02" (3/3) ... [2020-09-24 17:07:02,676 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-09-24 17:07:02,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:07:02,701 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:07:02,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:07:02,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:07:02,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:07:02,763 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:07:02,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:07:02,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:07:02,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:07:02,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:07:02,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:07:02,794 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-09-24 17:07:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-24 17:07:02,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:02,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:02,806 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:02,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:02,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2091922853, now seen corresponding path program 1 times [2020-09-24 17:07:02,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:02,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888161577] [2020-09-24 17:07:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:02,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:03,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:03,358 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:03,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 17:07:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:07:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-24 17:07:03,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 17:07:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:07:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:03,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:03,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:07:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:03,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888161577] [2020-09-24 17:07:03,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:03,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:07:03,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797361401] [2020-09-24 17:07:03,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:07:03,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:03,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:07:03,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:07:03,477 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 3 states. [2020-09-24 17:07:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:03,864 INFO L93 Difference]: Finished difference Result 521 states and 689 transitions. [2020-09-24 17:07:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:07:03,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-24 17:07:03,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:03,886 INFO L225 Difference]: With dead ends: 521 [2020-09-24 17:07:03,886 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 17:07:03,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:07:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 17:07:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 224. [2020-09-24 17:07:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-24 17:07:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 247 transitions. [2020-09-24 17:07:03,986 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 247 transitions. Word has length 15 [2020-09-24 17:07:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:03,986 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 247 transitions. [2020-09-24 17:07:03,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:07:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 247 transitions. [2020-09-24 17:07:03,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 17:07:03,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:03,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:03,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:07:03,988 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:03,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2028933562, now seen corresponding path program 1 times [2020-09-24 17:07:03,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:03,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927034720] [2020-09-24 17:07:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:04,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:04,187 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:04,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 17:07:04,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 17:07:04,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:07:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:07:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:04,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:04,273 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:04,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:04,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:07:04,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:04,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927034720] [2020-09-24 17:07:04,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:04,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:07:04,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440421194] [2020-09-24 17:07:04,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:07:04,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:04,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:07:04,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:07:04,286 INFO L87 Difference]: Start difference. First operand 224 states and 247 transitions. Second operand 6 states. [2020-09-24 17:07:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:05,040 INFO L93 Difference]: Finished difference Result 276 states and 315 transitions. [2020-09-24 17:07:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:07:05,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-24 17:07:05,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:05,048 INFO L225 Difference]: With dead ends: 276 [2020-09-24 17:07:05,049 INFO L226 Difference]: Without dead ends: 271 [2020-09-24 17:07:05,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:07:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-24 17:07:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 229. [2020-09-24 17:07:05,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-24 17:07:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 252 transitions. [2020-09-24 17:07:05,102 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 252 transitions. Word has length 17 [2020-09-24 17:07:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:05,102 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 252 transitions. [2020-09-24 17:07:05,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:07:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 252 transitions. [2020-09-24 17:07:05,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 17:07:05,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:05,105 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] [2020-09-24 17:07:05,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:07:05,108 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:05,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:05,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1718433881, now seen corresponding path program 1 times [2020-09-24 17:07:05,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:05,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290344305] [2020-09-24 17:07:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,613 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:05,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 17:07:05,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:07:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-24 17:07:05,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:07:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:05,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:05,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,680 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:05,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:05,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:05,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:05,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290344305] [2020-09-24 17:07:05,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:05,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:07:05,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964043810] [2020-09-24 17:07:05,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:07:05,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:05,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:07:05,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:07:05,690 INFO L87 Difference]: Start difference. First operand 229 states and 252 transitions. Second operand 6 states. [2020-09-24 17:07:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:06,377 INFO L93 Difference]: Finished difference Result 463 states and 512 transitions. [2020-09-24 17:07:06,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:07:06,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-24 17:07:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:06,381 INFO L225 Difference]: With dead ends: 463 [2020-09-24 17:07:06,381 INFO L226 Difference]: Without dead ends: 258 [2020-09-24 17:07:06,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:07:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-09-24 17:07:06,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 231. [2020-09-24 17:07:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-24 17:07:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2020-09-24 17:07:06,399 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 26 [2020-09-24 17:07:06,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:06,399 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2020-09-24 17:07:06,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:07:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2020-09-24 17:07:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 17:07:06,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:06,401 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:06,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:07:06,402 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:06,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1386814406, now seen corresponding path program 1 times [2020-09-24 17:07:06,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:06,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008312932] [2020-09-24 17:07:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:07,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:07,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 17:07:07,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-09-24 17:07:07,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 17:07:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:07:07,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:07,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:07,253 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:07,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:07,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:07:07,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 17:07:07,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008312932] [2020-09-24 17:07:07,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:07,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:07:07,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521901738] [2020-09-24 17:07:07,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:07:07,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:07,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:07:07,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:07:07,267 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand 6 states. [2020-09-24 17:07:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:07,937 INFO L93 Difference]: Finished difference Result 248 states and 273 transitions. [2020-09-24 17:07:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:07:07,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-24 17:07:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:07,944 INFO L225 Difference]: With dead ends: 248 [2020-09-24 17:07:07,944 INFO L226 Difference]: Without dead ends: 244 [2020-09-24 17:07:07,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:07:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-24 17:07:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 229. [2020-09-24 17:07:07,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-24 17:07:07,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 251 transitions. [2020-09-24 17:07:07,961 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 251 transitions. Word has length 42 [2020-09-24 17:07:07,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:07,961 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 251 transitions. [2020-09-24 17:07:07,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:07:07,962 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 251 transitions. [2020-09-24 17:07:07,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 17:07:07,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:07,963 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:07,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:07:07,964 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:07,964 INFO L82 PathProgramCache]: Analyzing trace with hash 527521680, now seen corresponding path program 1 times [2020-09-24 17:07:07,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:07,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383052176] [2020-09-24 17:07:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:08,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:08,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:08,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 17:07:08,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:08,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-09-24 17:07:08,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 17:07:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:07:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:08,831 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:08,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:08,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:08,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:08,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 17:07:08,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383052176] [2020-09-24 17:07:08,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:08,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:07:08,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936614403] [2020-09-24 17:07:08,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:07:08,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:08,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:07:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:07:08,845 INFO L87 Difference]: Start difference. First operand 229 states and 251 transitions. Second operand 6 states. [2020-09-24 17:07:09,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:09,547 INFO L93 Difference]: Finished difference Result 246 states and 270 transitions. [2020-09-24 17:07:09,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:07:09,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-24 17:07:09,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:09,549 INFO L225 Difference]: With dead ends: 246 [2020-09-24 17:07:09,549 INFO L226 Difference]: Without dead ends: 242 [2020-09-24 17:07:09,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:07:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-24 17:07:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2020-09-24 17:07:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-24 17:07:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 248 transitions. [2020-09-24 17:07:09,563 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 248 transitions. Word has length 42 [2020-09-24 17:07:09,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:09,563 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 248 transitions. [2020-09-24 17:07:09,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:07:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 248 transitions. [2020-09-24 17:07:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 17:07:09,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:09,565 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:09,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:07:09,566 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:09,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:09,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1598586176, now seen corresponding path program 1 times [2020-09-24 17:07:09,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:09,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477106405] [2020-09-24 17:07:09,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:10,289 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:10,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 17:07:10,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-09-24 17:07:10,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:07:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:07:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:07:10,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:10,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:10,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:10,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:10,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:10,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:10,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:10,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:10,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477106405] [2020-09-24 17:07:10,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:10,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 17:07:10,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787966957] [2020-09-24 17:07:10,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:07:10,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:07:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:07:10,408 INFO L87 Difference]: Start difference. First operand 227 states and 248 transitions. Second operand 10 states. [2020-09-24 17:07:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:11,617 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2020-09-24 17:07:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:07:11,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-24 17:07:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:11,621 INFO L225 Difference]: With dead ends: 299 [2020-09-24 17:07:11,622 INFO L226 Difference]: Without dead ends: 295 [2020-09-24 17:07:11,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:07:11,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-24 17:07:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 234. [2020-09-24 17:07:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-24 17:07:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 255 transitions. [2020-09-24 17:07:11,636 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 255 transitions. Word has length 46 [2020-09-24 17:07:11,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:11,637 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 255 transitions. [2020-09-24 17:07:11,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:07:11,637 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 255 transitions. [2020-09-24 17:07:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 17:07:11,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:11,638 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:11,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:07:11,646 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:11,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:11,646 INFO L82 PathProgramCache]: Analyzing trace with hash 180139286, now seen corresponding path program 1 times [2020-09-24 17:07:11,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:11,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606883059] [2020-09-24 17:07:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:11,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:11,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:12,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:15,470 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:15,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 17:07:15,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:07:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3805 [2020-09-24 17:07:15,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:07:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:07:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:15,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:15,627 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:15,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:15,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:15,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:15,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:15,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:15,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606883059] [2020-09-24 17:07:15,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:15,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:07:15,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608074177] [2020-09-24 17:07:15,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:07:15,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:15,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:07:15,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:07:15,649 INFO L87 Difference]: Start difference. First operand 234 states and 255 transitions. Second operand 9 states. [2020-09-24 17:07:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:16,890 INFO L93 Difference]: Finished difference Result 498 states and 547 transitions. [2020-09-24 17:07:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:07:16,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-09-24 17:07:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:16,893 INFO L225 Difference]: With dead ends: 498 [2020-09-24 17:07:16,894 INFO L226 Difference]: Without dead ends: 304 [2020-09-24 17:07:16,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:07:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-24 17:07:16,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 277. [2020-09-24 17:07:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-09-24 17:07:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 300 transitions. [2020-09-24 17:07:16,909 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 300 transitions. Word has length 46 [2020-09-24 17:07:16,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:16,910 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 300 transitions. [2020-09-24 17:07:16,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:07:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 300 transitions. [2020-09-24 17:07:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 17:07:16,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:16,911 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:16,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:07:16,912 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:16,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:16,912 INFO L82 PathProgramCache]: Analyzing trace with hash 797684937, now seen corresponding path program 1 times [2020-09-24 17:07:16,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:16,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255995854] [2020-09-24 17:07:16,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:07:16,934 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:07:16,934 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:07:16,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:07:16,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:07:16 BoogieIcfgContainer [2020-09-24 17:07:16,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:07:16,967 INFO L168 Benchmark]: Toolchain (without parser) took 16336.02 ms. Allocated memory was 140.5 MB in the beginning and 362.3 MB in the end (delta: 221.8 MB). Free memory was 102.1 MB in the beginning and 133.5 MB in the end (delta: -31.4 MB). Peak memory consumption was 190.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:16,968 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:07:16,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.42 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 168.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:16,970 INFO L168 Benchmark]: Boogie Preprocessor took 93.76 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 164.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:16,971 INFO L168 Benchmark]: RCFGBuilder took 1151.77 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 164.9 MB in the beginning and 201.2 MB in the end (delta: -36.3 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:16,972 INFO L168 Benchmark]: TraceAbstraction took 14297.06 ms. Allocated memory was 237.5 MB in the beginning and 362.3 MB in the end (delta: 124.8 MB). Free memory was 201.2 MB in the beginning and 133.5 MB in the end (delta: 67.7 MB). Peak memory consumption was 192.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:16,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.42 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 168.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.76 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 164.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1151.77 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 164.9 MB in the beginning and 201.2 MB in the end (delta: -36.3 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14297.06 ms. Allocated memory was 237.5 MB in the beginning and 362.3 MB in the end (delta: 124.8 MB). Free memory was 201.2 MB in the beginning and 133.5 MB in the end (delta: 67.7 MB). Peak memory consumption was 192.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] struct list *data = ((void *)0); [L628] COND TRUE __VERIFIER_nondet_int() [L629] struct node *node = malloc(sizeof *node); [L630] COND FALSE !(!node) [L632] node->next = node [L633] node->value = __VERIFIER_nondet_int() [L634] struct list *item = malloc(sizeof *item); [L635] COND FALSE !(!item) [L637] item->slist = node [L638] item->next = data [L639] data = item [L628] COND FALSE !(__VERIFIER_nondet_int()) [L641] COND FALSE !(!data) [L643] CALL inspect_before(data) [L604] COND FALSE !(!(shape)) [L605] shape->next [L605] COND FALSE !(shape->next) [L611] COND FALSE !(!(shape)) [L612] EXPR shape->next [L612] COND FALSE !(!(shape->next == ((void *)0))) [L613] EXPR shape->slist [L613] COND FALSE !(!(shape->slist)) [L614] EXPR shape->slist [L614] EXPR shape->slist->next [L614] COND TRUE !(shape->slist->next == ((void *)0)) [L614] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.1s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1653 SDtfs, 1476 SDslu, 2607 SDs, 0 SdLazy, 4176 SolverSat, 191 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=277occurred in iteration=7, 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, 7 MinimizatonAttempts, 215 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 44503 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 6/8 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...