/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:19,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:19,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:19,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:19,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:19,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:19,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:19,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:19,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:19,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:19,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:19,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:19,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:19,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:19,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:20,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:20,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:20,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:20,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:20,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:20,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:20,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:20,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:20,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:20,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:20,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:20,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:20,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:20,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:20,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:20,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:20,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:20,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:20,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:20,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:20,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:20,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:20,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:20,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:20,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:20,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:20,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:05:20,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:20,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:20,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:20,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:20,093 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:20,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:20,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:20,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:20,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:20,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:20,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:20,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:20,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:20,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:20,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:20,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:20,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:20,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:20,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:20,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:20,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:20,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:20,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:20,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:20,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:20,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:20,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:20,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:20,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:20,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:05:20,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:20,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:20,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:20,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:20,638 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:20,639 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 10:05:20,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3586f8ea0/5182c9157a8f4047b2f612904194839b/FLAG2dee95213 [2020-09-25 10:05:21,347 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:21,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 10:05:21,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3586f8ea0/5182c9157a8f4047b2f612904194839b/FLAG2dee95213 [2020-09-25 10:05:21,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3586f8ea0/5182c9157a8f4047b2f612904194839b [2020-09-25 10:05:21,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:21,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:21,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:21,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:21,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:21,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca632cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21, skipping insertion in model container [2020-09-25 10:05:21,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:21,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:22,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:22,243 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:22,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:22,362 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:22,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22 WrapperNode [2020-09-25 10:05:22,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:22,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:22,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:22,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:22,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:22,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:22,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:22,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:22,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:23,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:23,272 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 10:05:23,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:23 BoogieIcfgContainer [2020-09-25 10:05:23,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:23,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:23,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:23,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:23,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:21" (1/3) ... [2020-09-25 10:05:23,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5579bb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:23, skipping insertion in model container [2020-09-25 10:05:23,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (2/3) ... [2020-09-25 10:05:23,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5579bb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:23, skipping insertion in model container [2020-09-25 10:05:23,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:23" (3/3) ... [2020-09-25 10:05:23,289 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-25 10:05:23,302 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:23,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 10:05:23,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 10:05:23,368 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:23,368 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:23,368 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:23,368 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:23,368 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:23,369 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:23,369 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:23,369 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-25 10:05:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 10:05:23,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:23,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:23,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:23,413 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-25 10:05:23,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:23,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862397398] [2020-09-25 10:05:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:23,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:23,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:05:23,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:23,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-25 10:05:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:23,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:05:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:24,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:24,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:24,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:24,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:05:24,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:24,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:24,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862397398] [2020-09-25 10:05:24,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:24,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:24,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121457498] [2020-09-25 10:05:24,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:24,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:24,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:24,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:24,087 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 6 states. [2020-09-25 10:05:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:24,565 INFO L93 Difference]: Finished difference Result 390 states and 486 transitions. [2020-09-25 10:05:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:05:24,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-25 10:05:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:24,584 INFO L225 Difference]: With dead ends: 390 [2020-09-25 10:05:24,584 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 10:05:24,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:05:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 10:05:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 142. [2020-09-25 10:05:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-25 10:05:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-09-25 10:05:24,654 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 18 [2020-09-25 10:05:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:24,655 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-09-25 10:05:24,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-09-25 10:05:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 10:05:24,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:24,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:24,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:24,658 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:24,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:24,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1753263237, now seen corresponding path program 1 times [2020-09-25 10:05:24,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:24,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308713202] [2020-09-25 10:05:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:27,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:27,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 10:05:27,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:05:27,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2582 [2020-09-25 10:05:27,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:27,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:27,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:05:27,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:05:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:05:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:27,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:27,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:27,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:27,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:27,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:27,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:27,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:27,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308713202] [2020-09-25 10:05:27,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:27,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:05:27,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219831623] [2020-09-25 10:05:27,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:27,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:27,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:27,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:27,423 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 7 states. [2020-09-25 10:05:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:27,901 INFO L93 Difference]: Finished difference Result 309 states and 335 transitions. [2020-09-25 10:05:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:05:27,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 10:05:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:27,905 INFO L225 Difference]: With dead ends: 309 [2020-09-25 10:05:27,905 INFO L226 Difference]: Without dead ends: 224 [2020-09-25 10:05:27,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:05:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-09-25 10:05:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2020-09-25 10:05:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 10:05:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 177 transitions. [2020-09-25 10:05:27,923 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 177 transitions. Word has length 43 [2020-09-25 10:05:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:27,924 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 177 transitions. [2020-09-25 10:05:27,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 177 transitions. [2020-09-25 10:05:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 10:05:27,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:27,927 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:27,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:27,927 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:27,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1161635121, now seen corresponding path program 1 times [2020-09-25 10:05:27,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:27,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953955876] [2020-09-25 10:05:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:27,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:32,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:32,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 10:05:32,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:05:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4053 [2020-09-25 10:05:32,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:32,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:05:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:05:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:05:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:32,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:32,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:32,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:32,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:32,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:32,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:32,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:32,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:32,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:32,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:32,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:32,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953955876] [2020-09-25 10:05:32,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:32,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:05:32,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726960428] [2020-09-25 10:05:32,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:32,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:32,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:32,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:32,123 INFO L87 Difference]: Start difference. First operand 164 states and 177 transitions. Second operand 7 states. [2020-09-25 10:05:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:32,481 INFO L93 Difference]: Finished difference Result 287 states and 309 transitions. [2020-09-25 10:05:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:05:32,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 10:05:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:32,484 INFO L225 Difference]: With dead ends: 287 [2020-09-25 10:05:32,484 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 10:05:32,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:05:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 10:05:32,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 162. [2020-09-25 10:05:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 10:05:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2020-09-25 10:05:32,498 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 56 [2020-09-25 10:05:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:32,498 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2020-09-25 10:05:32,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2020-09-25 10:05:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 10:05:32,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:32,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:32,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:05:32,502 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:32,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:32,502 INFO L82 PathProgramCache]: Analyzing trace with hash 964312838, now seen corresponding path program 1 times [2020-09-25 10:05:32,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:32,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463134184] [2020-09-25 10:05:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:32,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:36,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:36,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 10:05:36,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:05:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4335 [2020-09-25 10:05:36,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:36,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:05:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:05:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:05:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:37,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:37,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:37,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:37,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:37,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:37,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:37,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463134184] [2020-09-25 10:05:37,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:37,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 10:05:37,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585193107] [2020-09-25 10:05:37,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:05:37,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:37,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:05:37,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:05:37,309 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 13 states. [2020-09-25 10:05:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:38,387 INFO L93 Difference]: Finished difference Result 354 states and 376 transitions. [2020-09-25 10:05:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:05:38,387 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-09-25 10:05:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:38,390 INFO L225 Difference]: With dead ends: 354 [2020-09-25 10:05:38,391 INFO L226 Difference]: Without dead ends: 351 [2020-09-25 10:05:38,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:05:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-09-25 10:05:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 187. [2020-09-25 10:05:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-25 10:05:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2020-09-25 10:05:38,406 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 59 [2020-09-25 10:05:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:38,406 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2020-09-25 10:05:38,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:05:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2020-09-25 10:05:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 10:05:38,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:38,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:38,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:05:38,410 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:38,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:38,411 INFO L82 PathProgramCache]: Analyzing trace with hash -249552179, now seen corresponding path program 1 times [2020-09-25 10:05:38,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:38,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021884545] [2020-09-25 10:05:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:41,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:41,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 10:05:41,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:05:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2755 [2020-09-25 10:05:41,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:41,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:05:41,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:05:41,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:41,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:41,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:41,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:41,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:41,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:41,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:05:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:41,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021884545] [2020-09-25 10:05:41,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:41,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:05:41,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066144445] [2020-09-25 10:05:41,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:41,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:41,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:41,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:41,323 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand 7 states. [2020-09-25 10:05:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:41,760 INFO L93 Difference]: Finished difference Result 333 states and 356 transitions. [2020-09-25 10:05:41,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:05:41,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 10:05:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:41,762 INFO L225 Difference]: With dead ends: 333 [2020-09-25 10:05:41,763 INFO L226 Difference]: Without dead ends: 281 [2020-09-25 10:05:41,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:05:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-25 10:05:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 164. [2020-09-25 10:05:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 10:05:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2020-09-25 10:05:41,774 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 60 [2020-09-25 10:05:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:41,774 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2020-09-25 10:05:41,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2020-09-25 10:05:41,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 10:05:41,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:41,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:41,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:05:41,777 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash -70417469, now seen corresponding path program 1 times [2020-09-25 10:05:41,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:41,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058577425] [2020-09-25 10:05:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:41,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:42,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 10:05:42,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:42,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-09-25 10:05:42,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:42,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:05:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:05:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:43,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:43,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:43,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:43,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:05:43,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:43,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:43,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058577425] [2020-09-25 10:05:43,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:43,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 10:05:43,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744827634] [2020-09-25 10:05:43,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:05:43,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:43,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:05:43,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:05:43,153 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 13 states. [2020-09-25 10:05:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:43,974 INFO L93 Difference]: Finished difference Result 282 states and 298 transitions. [2020-09-25 10:05:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:05:43,975 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-09-25 10:05:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:43,977 INFO L225 Difference]: With dead ends: 282 [2020-09-25 10:05:43,977 INFO L226 Difference]: Without dead ends: 279 [2020-09-25 10:05:43,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:05:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-25 10:05:43,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 191. [2020-09-25 10:05:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 10:05:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 204 transitions. [2020-09-25 10:05:43,989 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 204 transitions. Word has length 61 [2020-09-25 10:05:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:43,989 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 204 transitions. [2020-09-25 10:05:43,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:05:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 204 transitions. [2020-09-25 10:05:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 10:05:43,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:43,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:43,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:05:43,992 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:43,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:43,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2033546672, now seen corresponding path program 1 times [2020-09-25 10:05:43,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:43,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398634405] [2020-09-25 10:05:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:44,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:45,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:45,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:05:45,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-09-25 10:05:45,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:45,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:05:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 10:05:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:46,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:46,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:46,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:46,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:05:46,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:46,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:46,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:46,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:46,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:46,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398634405] [2020-09-25 10:05:46,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:46,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 10:05:46,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350252643] [2020-09-25 10:05:46,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:05:46,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:46,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:05:46,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:05:46,405 INFO L87 Difference]: Start difference. First operand 191 states and 204 transitions. Second operand 14 states. [2020-09-25 10:05:47,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:47,530 INFO L93 Difference]: Finished difference Result 280 states and 296 transitions. [2020-09-25 10:05:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:05:47,531 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-09-25 10:05:47,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:47,534 INFO L225 Difference]: With dead ends: 280 [2020-09-25 10:05:47,534 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 10:05:47,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:05:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 10:05:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 191. [2020-09-25 10:05:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 10:05:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 203 transitions. [2020-09-25 10:05:47,545 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 203 transitions. Word has length 62 [2020-09-25 10:05:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:47,545 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 203 transitions. [2020-09-25 10:05:47,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:05:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 203 transitions. [2020-09-25 10:05:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 10:05:47,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:47,547 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:47,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:05:47,548 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:47,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:47,548 INFO L82 PathProgramCache]: Analyzing trace with hash -411491553, now seen corresponding path program 1 times [2020-09-25 10:05:47,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:47,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483893957] [2020-09-25 10:05:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:48,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:52,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:05:52,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:05:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:05:52,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:52,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:05:52,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:52,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:05:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:05:52,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:52,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:52,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483893957] [2020-09-25 10:05:52,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:52,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:05:52,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206805429] [2020-09-25 10:05:52,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:05:52,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:52,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:05:52,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:05:52,801 INFO L87 Difference]: Start difference. First operand 191 states and 203 transitions. Second operand 15 states. [2020-09-25 10:05:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:54,041 INFO L93 Difference]: Finished difference Result 486 states and 520 transitions. [2020-09-25 10:05:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:05:54,041 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-09-25 10:05:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:54,044 INFO L225 Difference]: With dead ends: 486 [2020-09-25 10:05:54,044 INFO L226 Difference]: Without dead ends: 393 [2020-09-25 10:05:54,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:05:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-25 10:05:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 219. [2020-09-25 10:05:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-09-25 10:05:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2020-09-25 10:05:54,058 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 62 [2020-09-25 10:05:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:54,058 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2020-09-25 10:05:54,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:05:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2020-09-25 10:05:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 10:05:54,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:54,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:54,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:05:54,060 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:54,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1053070700, now seen corresponding path program 1 times [2020-09-25 10:05:54,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:54,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898892382] [2020-09-25 10:05:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:54,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 10:05:55,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1774 [2020-09-25 10:05:55,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:05:55,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 10:05:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:56,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:56,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:56,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:56,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:05:56,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:56,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:56,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898892382] [2020-09-25 10:05:56,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:56,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 10:05:56,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844817369] [2020-09-25 10:05:56,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:05:56,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:56,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:05:56,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:05:56,224 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 14 states. [2020-09-25 10:05:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:56,862 INFO L93 Difference]: Finished difference Result 386 states and 417 transitions. [2020-09-25 10:05:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:05:56,863 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-09-25 10:05:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:56,865 INFO L225 Difference]: With dead ends: 386 [2020-09-25 10:05:56,865 INFO L226 Difference]: Without dead ends: 200 [2020-09-25 10:05:56,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:05:56,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-25 10:05:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 190. [2020-09-25 10:05:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-25 10:05:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 204 transitions. [2020-09-25 10:05:56,877 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 204 transitions. Word has length 63 [2020-09-25 10:05:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:56,877 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 204 transitions. [2020-09-25 10:05:56,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:05:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 204 transitions. [2020-09-25 10:05:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 10:05:56,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:56,878 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:56,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:05:56,879 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:56,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-25 10:05:56,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:56,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534486024] [2020-09-25 10:05:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 10:05:56,904 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 10:05:56,905 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 10:05:56,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:05:56,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:05:56 BoogieIcfgContainer [2020-09-25 10:05:56,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:05:56,938 INFO L168 Benchmark]: Toolchain (without parser) took 35274.04 ms. Allocated memory was 139.5 MB in the beginning and 477.6 MB in the end (delta: 338.2 MB). Free memory was 101.0 MB in the beginning and 112.6 MB in the end (delta: -11.6 MB). Peak memory consumption was 326.6 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:56,939 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 10:05:56,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.04 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 170.1 MB in the end (delta: -69.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:56,941 INFO L168 Benchmark]: Boogie Preprocessor took 92.74 ms. Allocated memory is still 203.9 MB. Free memory was 170.1 MB in the beginning and 166.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:56,942 INFO L168 Benchmark]: RCFGBuilder took 820.88 ms. Allocated memory is still 203.9 MB. Free memory was 166.7 MB in the beginning and 106.1 MB in the end (delta: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:56,942 INFO L168 Benchmark]: TraceAbstraction took 33654.74 ms. Allocated memory was 203.9 MB in the beginning and 477.6 MB in the end (delta: 273.7 MB). Free memory was 105.5 MB in the beginning and 112.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 266.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:56,946 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.04 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 170.1 MB in the end (delta: -69.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.74 ms. Allocated memory is still 203.9 MB. Free memory was 170.1 MB in the beginning and 166.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 820.88 ms. Allocated memory is still 203.9 MB. Free memory was 166.7 MB in the beginning and 106.1 MB in the end (delta: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33654.74 ms. Allocated memory was 203.9 MB in the beginning and 477.6 MB in the end (delta: 273.7 MB). Free memory was 105.5 MB in the beginning and 112.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 266.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.5s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1167 SDtfs, 4843 SDslu, 5822 SDs, 0 SdLazy, 3725 SolverSat, 342 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=8, 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, 9 MinimizatonAttempts, 796 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 26.0s InterpolantComputationTime, 550 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 277133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 4/6 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...