/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:01:56,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:56,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:56,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:56,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:56,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:56,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:56,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:56,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:56,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:56,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:56,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:56,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:56,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:56,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:56,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:56,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:56,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:56,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:56,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:56,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:56,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:56,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:56,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:56,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:56,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:56,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:56,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:56,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:56,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:56,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:56,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:56,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:56,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:56,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:56,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:56,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:56,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:56,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:56,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:56,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:56,971 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 16:01:57,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:57,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:57,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:57,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:57,027 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:57,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:57,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:57,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:57,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:57,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:57,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:57,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:57,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:57,031 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:57,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:57,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:57,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:57,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:57,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:57,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:57,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:57,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:57,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:57,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:57,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:57,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:57,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:57,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:57,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:57,034 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:01:57,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:57,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:57,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:57,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:57,570 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:57,571 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-24 16:01:57,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d99fd2b5/ca58bee8a419400b8d48841d843d71a6/FLAG8a94b0d09 [2020-09-24 16:01:58,276 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:58,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-24 16:01:58,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d99fd2b5/ca58bee8a419400b8d48841d843d71a6/FLAG8a94b0d09 [2020-09-24 16:01:58,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d99fd2b5/ca58bee8a419400b8d48841d843d71a6 [2020-09-24 16:01:58,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:58,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:58,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:58,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:58,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:58,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21afce39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58, skipping insertion in model container [2020-09-24 16:01:58,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:58,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:59,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:59,148 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:59,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:59,247 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:59,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59 WrapperNode [2020-09-24 16:01:59,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:59,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:59,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:59,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:59,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:59,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:59,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:59,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:59,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (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 16:01:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:01:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:01:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:01:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:01:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:01:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:01:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:01:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:01:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:01:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:01:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:01:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:01:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:01:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:01:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:01:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:01:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:01:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:01:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:01:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:01:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:01:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:01:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:01:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:01:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:01:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:01:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:01:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:01:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:01:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:01:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:01:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:01:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:01:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:01:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:01:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:01:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:01:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:01:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:01:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:01:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:01:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:01:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:01:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:01:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:01:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:01:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:01:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:01:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:01:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:01:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:01:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:01:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:01:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:01:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 16:01:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:01:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:01:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:01:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:01:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:01:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:01:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:01:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:01:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:01:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:01:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:01:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:01:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:01:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:01:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:01:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:01:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:01:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:01:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:01:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:01:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:01:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:01:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:01:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:01:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:01:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:01:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:01:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:01:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:01:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:01:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:01:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:01:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:01:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:01:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:01:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:01:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:01:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:01:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:01:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:01:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:01:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:01:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:01:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:01:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:01:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:01:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:01:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:01:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:01:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:01:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:01:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:01:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:01:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:01:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:01:59,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:01:59,975 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-24 16:01:59,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:59 BoogieIcfgContainer [2020-09-24 16:01:59,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:01:59,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:01:59,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:01:59,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:01:59,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:58" (1/3) ... [2020-09-24 16:01:59,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fc0cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:59, skipping insertion in model container [2020-09-24 16:01:59,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (2/3) ... [2020-09-24 16:01:59,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fc0cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:59, skipping insertion in model container [2020-09-24 16:01:59,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:59" (3/3) ... [2020-09-24 16:01:59,992 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-09-24 16:02:00,003 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:02:00,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-24 16:02:00,038 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-24 16:02:00,071 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:02:00,071 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:02:00,071 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:02:00,072 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:02:00,072 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:02:00,072 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:02:00,072 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:02:00,072 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:02:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-09-24 16:02:00,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 16:02:00,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:00,106 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] [2020-09-24 16:02:00,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:00,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:00,113 INFO L82 PathProgramCache]: Analyzing trace with hash -976698803, now seen corresponding path program 1 times [2020-09-24 16:02:00,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:00,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968028813] [2020-09-24 16:02:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:00,295 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:00,295 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:00,296 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:00,296 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:00,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 16:02:00,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:02:00,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 16:02:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:00,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:00,395 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:00,395 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:00,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:00,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:00,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:00,415 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 16:02:00,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968028813] [2020-09-24 16:02:00,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:00,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:02:00,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344753555] [2020-09-24 16:02:00,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:02:00,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:00,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:02:00,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:02:00,450 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 3 states. [2020-09-24 16:02:00,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:00,748 INFO L93 Difference]: Finished difference Result 173 states and 209 transitions. [2020-09-24 16:02:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:02:00,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-24 16:02:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:00,774 INFO L225 Difference]: With dead ends: 173 [2020-09-24 16:02:00,774 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 16:02:00,782 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 16:02:00,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 16:02:00,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 16:02:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 16:02:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-09-24 16:02:00,839 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 20 [2020-09-24 16:02:00,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:00,839 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-09-24 16:02:00,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:02:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-09-24 16:02:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 16:02:00,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:00,841 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] [2020-09-24 16:02:00,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:02:00,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1430822134, now seen corresponding path program 1 times [2020-09-24 16:02:00,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:00,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419358544] [2020-09-24 16:02:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,081 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,081 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,081 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,082 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 16:02:01,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-24 16:02:01,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 16:02:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 16:02:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:01,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,233 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,233 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:01,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:01,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:01,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:01,247 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 16:02:01,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419358544] [2020-09-24 16:02:01,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:01,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:02:01,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820710200] [2020-09-24 16:02:01,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:02:01,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:01,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:02:01,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:02:01,252 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 9 states. [2020-09-24 16:02:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:01,610 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2020-09-24 16:02:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:02:01,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-09-24 16:02:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:01,613 INFO L225 Difference]: With dead ends: 149 [2020-09-24 16:02:01,613 INFO L226 Difference]: Without dead ends: 147 [2020-09-24 16:02:01,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:02:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-09-24 16:02:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 82. [2020-09-24 16:02:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-24 16:02:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-09-24 16:02:01,630 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 22 [2020-09-24 16:02:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:01,630 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-09-24 16:02:01,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:02:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-09-24 16:02:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 16:02:01,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:01,632 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] [2020-09-24 16:02:01,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:02:01,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:01,633 INFO L82 PathProgramCache]: Analyzing trace with hash 340604940, now seen corresponding path program 1 times [2020-09-24 16:02:01,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:01,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386163347] [2020-09-24 16:02:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,707 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,708 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 16:02:01,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 16:02:01,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:02:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:02:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 16:02:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:01,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,875 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,876 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,877 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:01,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:02:01,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:01,895 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 16:02:01,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386163347] [2020-09-24 16:02:01,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:01,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:02:01,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340466301] [2020-09-24 16:02:01,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:02:01,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:01,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:02:01,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:02:01,899 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 7 states. [2020-09-24 16:02:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:02,335 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2020-09-24 16:02:02,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:02:02,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-24 16:02:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:02,337 INFO L225 Difference]: With dead ends: 118 [2020-09-24 16:02:02,337 INFO L226 Difference]: Without dead ends: 116 [2020-09-24 16:02:02,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:02:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-24 16:02:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-09-24 16:02:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-24 16:02:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-09-24 16:02:02,348 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 28 [2020-09-24 16:02:02,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:02,349 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-09-24 16:02:02,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:02:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-09-24 16:02:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 16:02:02,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:02,351 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] [2020-09-24 16:02:02,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:02:02,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:02,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1933129776, now seen corresponding path program 1 times [2020-09-24 16:02:02,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:02,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604204363] [2020-09-24 16:02:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,373 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:02,374 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:02,374 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:02,374 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 16:02:02,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:02,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:02:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:02:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 16:02:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:02,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,451 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:02,451 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:02,451 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:02,452 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:02,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:02,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:02,460 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 16:02:02,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604204363] [2020-09-24 16:02:02,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:02,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:02,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479356352] [2020-09-24 16:02:02,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:02,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:02,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:02,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:02,465 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 4 states. [2020-09-24 16:02:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:02,640 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2020-09-24 16:02:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:02,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-24 16:02:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:02,642 INFO L225 Difference]: With dead ends: 195 [2020-09-24 16:02:02,645 INFO L226 Difference]: Without dead ends: 136 [2020-09-24 16:02:02,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-24 16:02:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-09-24 16:02:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-24 16:02:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-09-24 16:02:02,660 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 33 [2020-09-24 16:02:02,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:02,661 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-09-24 16:02:02,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-09-24 16:02:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 16:02:02,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:02,663 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] [2020-09-24 16:02:02,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:02:02,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:02,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:02,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1127481847, now seen corresponding path program 1 times [2020-09-24 16:02:02,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:02,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357788244] [2020-09-24 16:02:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,785 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:02:02,786 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-24 16:02:02,786 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-24 16:02:02,786 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 16:02:02,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 16:02:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:02:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:02:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:02:02,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,968 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:02,968 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:02,969 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:02,969 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:02,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:02,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:02,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:02,978 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 16:02:02,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357788244] [2020-09-24 16:02:02,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:02,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 16:02:02,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388764841] [2020-09-24 16:02:02,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 16:02:02,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:02,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 16:02:02,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:02:02,981 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 12 states. [2020-09-24 16:02:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:03,531 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2020-09-24 16:02:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:02:03,532 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-24 16:02:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:03,533 INFO L225 Difference]: With dead ends: 190 [2020-09-24 16:02:03,533 INFO L226 Difference]: Without dead ends: 160 [2020-09-24 16:02:03,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-09-24 16:02:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-24 16:02:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 105. [2020-09-24 16:02:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-24 16:02:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-09-24 16:02:03,559 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 37 [2020-09-24 16:02:03,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:03,559 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-09-24 16:02:03,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 16:02:03,559 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-09-24 16:02:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 16:02:03,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:03,561 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] [2020-09-24 16:02:03,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:02:03,562 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:03,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:03,562 INFO L82 PathProgramCache]: Analyzing trace with hash 821991267, now seen corresponding path program 1 times [2020-09-24 16:02:03,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:03,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257938315] [2020-09-24 16:02:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:03,687 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:03,687 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:03,687 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:03,688 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:03,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 16:02:03,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:03,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 16:02:03,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 16:02:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 16:02:03,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:03,713 ERROR L253 erpolLogProxyWrapper]: Interpolant 13 not inductive [2020-09-24 16:02:03,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:02:03,728 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-09-24 16:02:03,737 INFO L168 Benchmark]: Toolchain (without parser) took 5167.60 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 100.9 MB in the beginning and 128.2 MB in the end (delta: -27.3 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:03,738 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-24 16:02:03,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.26 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 100.2 MB in the beginning and 172.4 MB in the end (delta: -72.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:03,740 INFO L168 Benchmark]: Boogie Preprocessor took 72.60 ms. Allocated memory is still 205.5 MB. Free memory was 172.4 MB in the beginning and 169.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:03,740 INFO L168 Benchmark]: RCFGBuilder took 659.56 ms. Allocated memory is still 205.5 MB. Free memory was 169.8 MB in the beginning and 121.1 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:03,741 INFO L168 Benchmark]: TraceAbstraction took 3750.19 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 120.4 MB in the beginning and 128.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:03,745 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.26 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 100.2 MB in the beginning and 172.4 MB in the end (delta: -72.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.60 ms. Allocated memory is still 205.5 MB. Free memory was 172.4 MB in the beginning and 169.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 659.56 ms. Allocated memory is still 205.5 MB. Free memory was 169.8 MB in the beginning and 121.1 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3750.19 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 120.4 MB in the beginning and 128.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...