/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/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:04:18,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:04:18,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:04:18,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:04:18,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:04:18,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:04:18,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:04:18,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:04:18,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:04:18,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:04:19,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:04:19,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:04:19,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:04:19,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:04:19,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:04:19,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:04:19,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:04:19,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:04:19,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:04:19,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:04:19,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:04:19,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:04:19,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:04:19,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:04:19,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:04:19,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:04:19,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:04:19,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:04:19,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:04:19,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:04:19,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:04:19,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:04:19,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:04:19,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:04:19,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:04:19,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:04:19,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:04:19,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:04:19,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:04:19,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:04:19,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:04:19,030 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 10:04:19,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:04:19,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:04:19,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:04:19,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:04:19,061 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:04:19,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:04:19,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:04:19,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:04:19,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:04:19,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:04:19,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:04:19,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:04:19,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:04:19,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:04:19,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:04:19,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:04:19,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:04:19,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:04:19,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:04:19,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:04:19,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:04:19,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:04:19,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:04:19,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:04:19,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:04:19,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:04:19,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:04:19,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:04:19,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:04:19,072 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 10:04:19,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:04:19,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:04:19,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:04:19,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:04:19,597 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:04:19,599 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 10:04:19,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c576c431/9c256f437537465494ef9fef37bbb7d3/FLAGec72e13d3 [2020-09-25 10:04:20,262 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:04:20,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 10:04:20,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c576c431/9c256f437537465494ef9fef37bbb7d3/FLAGec72e13d3 [2020-09-25 10:04:20,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c576c431/9c256f437537465494ef9fef37bbb7d3 [2020-09-25 10:04:20,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:04:20,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:04:20,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:04:20,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:04:20,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:04:20,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:04:20" (1/1) ... [2020-09-25 10:04:20,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20, skipping insertion in model container [2020-09-25 10:04:20,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:04:20" (1/1) ... [2020-09-25 10:04:20,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:04:20,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:04:20,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:04:20,923 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:04:20,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:04:20,966 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:04:20,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20 WrapperNode [2020-09-25 10:04:20,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:04:20,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:04:20,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:04:20,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:04:20,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20" (1/1) ... [2020-09-25 10:04:20,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20" (1/1) ... [2020-09-25 10:04:21,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20" (1/1) ... [2020-09-25 10:04:21,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20" (1/1) ... [2020-09-25 10:04:21,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20" (1/1) ... [2020-09-25 10:04:21,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20" (1/1) ... [2020-09-25 10:04:21,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20" (1/1) ... [2020-09-25 10:04:21,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:04:21,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:04:21,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:04:21,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:04:21,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20" (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 10:04:21,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:04:21,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:04:21,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 10:04:21,190 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 10:04:21,190 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 10:04:21,191 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-25 10:04:21,191 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-25 10:04:21,191 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-25 10:04:21,191 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-25 10:04:21,191 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-25 10:04:21,192 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-25 10:04:21,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:04:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:04:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 10:04:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:04:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 10:04:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 10:04:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-25 10:04:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-25 10:04:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-25 10:04:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-25 10:04:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-25 10:04:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-25 10:04:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:04:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:04:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:04:21,583 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:04:21,583 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:04:21,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:04:21 BoogieIcfgContainer [2020-09-25 10:04:21,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:04:21,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:04:21,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:04:21,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:04:21,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:04:20" (1/3) ... [2020-09-25 10:04:21,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192ccfd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:04:21, skipping insertion in model container [2020-09-25 10:04:21,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:04:20" (2/3) ... [2020-09-25 10:04:21,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192ccfd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:04:21, skipping insertion in model container [2020-09-25 10:04:21,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:04:21" (3/3) ... [2020-09-25 10:04:21,601 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-25 10:04:21,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:04:21,623 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:04:21,643 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:04:21,675 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:04:21,675 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:04:21,676 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:04:21,676 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:04:21,676 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:04:21,676 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:04:21,676 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:04:21,676 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:04:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 10:04:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 10:04:21,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:21,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:21,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:21,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-25 10:04:21,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:21,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375786336] [2020-09-25 10:04:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:21,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:22,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:22,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:04:22,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:04:22,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 10:04:22,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:22,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 10:04:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 10:04:22,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 10:04:22,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:22,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:22,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:22,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:04:22,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:22,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 10:04:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:04:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:04:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:22,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:22,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:22,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:22,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:22,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:04:22,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:22,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:04:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:22,270 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 10:04:22,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375786336] [2020-09-25 10:04:22,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:04:22,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:04:22,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905183276] [2020-09-25 10:04:22,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:04:22,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:22,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:04:22,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:04:22,304 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 5 states. [2020-09-25 10:04:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:22,648 INFO L93 Difference]: Finished difference Result 265 states and 334 transitions. [2020-09-25 10:04:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:04:22,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 10:04:22,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:22,669 INFO L225 Difference]: With dead ends: 265 [2020-09-25 10:04:22,669 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 10:04:22,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:04:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 10:04:22,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 10:04:22,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 10:04:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-25 10:04:22,760 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 19 [2020-09-25 10:04:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:22,761 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-25 10:04:22,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:04:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-25 10:04:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 10:04:22,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:22,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:22,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:04:22,767 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:22,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:22,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-25 10:04:22,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:22,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24659484] [2020-09-25 10:04:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:23,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:23,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:04:23,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:04:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-09-25 10:04:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:23,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:04:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:04:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:23,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:23,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:23,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:23,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:04:23,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:23,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:23,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:04:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:23,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:23,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:23,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:23,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:04:23,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:23,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:04:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:23,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 10:04:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:23,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:23,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:23,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:23,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:04:23,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:23,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:23,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:04:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:23,607 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 10:04:23,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24659484] [2020-09-25 10:04:23,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:04:23,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:04:23,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429754484] [2020-09-25 10:04:23,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:04:23,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:23,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:04:23,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:04:23,612 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-25 10:04:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:23,888 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-09-25 10:04:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:04:23,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 10:04:23,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:23,893 INFO L225 Difference]: With dead ends: 411 [2020-09-25 10:04:23,893 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 10:04:23,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:04:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 10:04:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-09-25 10:04:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 10:04:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-09-25 10:04:23,921 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-09-25 10:04:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:23,922 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-09-25 10:04:23,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:04:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-09-25 10:04:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 10:04:23,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:23,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:23,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:04:23,926 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-09-25 10:04:23,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:23,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105633509] [2020-09-25 10:04:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:23,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:24,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:25,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:25,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:04:25,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:04:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-09-25 10:04:25,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:25,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:25,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:25,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:04:25,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:04:25,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:25,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:25,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:25,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:25,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:04:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:25,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:04:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:26,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:26,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:26,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:04:26,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:26,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:26,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:04:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:04:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:26,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:26,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:04:26,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:04:26,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:26,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:04:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:26,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 10:04:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:26,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:26,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:26,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:26,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:04:26,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:26,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:04:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:26,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:04:26,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105633509] [2020-09-25 10:04:26,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:04:26,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:04:26,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826051207] [2020-09-25 10:04:26,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:04:26,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:26,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:04:26,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:04:26,054 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 8 states. [2020-09-25 10:04:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:26,405 INFO L93 Difference]: Finished difference Result 573 states and 736 transitions. [2020-09-25 10:04:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:04:26,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 10:04:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:26,410 INFO L225 Difference]: With dead ends: 573 [2020-09-25 10:04:26,410 INFO L226 Difference]: Without dead ends: 387 [2020-09-25 10:04:26,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:04:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-09-25 10:04:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 240. [2020-09-25 10:04:26,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-25 10:04:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 298 transitions. [2020-09-25 10:04:26,435 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 298 transitions. Word has length 59 [2020-09-25 10:04:26,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:26,435 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 298 transitions. [2020-09-25 10:04:26,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:04:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 298 transitions. [2020-09-25 10:04:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:04:26,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:26,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:26,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:04:26,439 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:26,440 INFO L82 PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times [2020-09-25 10:04:26,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:26,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888217514] [2020-09-25 10:04:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:26,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:26,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:30,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 10:04:30,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:04:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3845 [2020-09-25 10:04:30,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:30,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:04:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:04:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 10:04:30,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:30,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:30,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:30,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:30,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:04:30,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:30,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:30,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:04:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:30,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:30,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:30,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:04:30,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:30,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:04:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:30,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:04:30,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:04:30,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:30,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:04:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:04:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:04:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:30,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:04:30,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:30,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:04:30,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:30,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:30,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:04:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:04:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:30,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:30,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:04:30,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:30,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:04:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 10:04:30,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888217514] [2020-09-25 10:04:30,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:04:30,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:04:30,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772746966] [2020-09-25 10:04:30,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:04:30,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:30,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:04:30,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:04:30,480 INFO L87 Difference]: Start difference. First operand 240 states and 298 transitions. Second operand 7 states. [2020-09-25 10:04:30,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:30,803 INFO L93 Difference]: Finished difference Result 912 states and 1171 transitions. [2020-09-25 10:04:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:04:30,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-09-25 10:04:30,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:30,810 INFO L225 Difference]: With dead ends: 912 [2020-09-25 10:04:30,810 INFO L226 Difference]: Without dead ends: 686 [2020-09-25 10:04:30,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:04:30,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-09-25 10:04:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 433. [2020-09-25 10:04:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-25 10:04:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 544 transitions. [2020-09-25 10:04:30,840 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 544 transitions. Word has length 79 [2020-09-25 10:04:30,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:30,841 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 544 transitions. [2020-09-25 10:04:30,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:04:30,841 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 544 transitions. [2020-09-25 10:04:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:04:30,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:30,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:30,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:04:30,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:30,845 INFO L82 PathProgramCache]: Analyzing trace with hash -204784227, now seen corresponding path program 1 times [2020-09-25 10:04:30,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:30,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616364813] [2020-09-25 10:04:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:31,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:31,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 10:04:31,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:04:31,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-09-25 10:04:31,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:31,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:31,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:04:31,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:04:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 10:04:31,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:31,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:31,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:31,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:31,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:31,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:04:31,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:31,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:04:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:04:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:31,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:04:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:31,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:04:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:31,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:31,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:31,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:04:31,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:04:31,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:31,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:04:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:04:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:31,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:04:31,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:04:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:31,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:04:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:04:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:31,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:31,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:04:31,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:31,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:04:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:04:31,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616364813] [2020-09-25 10:04:31,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:04:31,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:04:31,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853387424] [2020-09-25 10:04:31,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:04:31,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:31,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:04:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:04:31,847 INFO L87 Difference]: Start difference. First operand 433 states and 544 transitions. Second operand 10 states. [2020-09-25 10:04:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:32,402 INFO L93 Difference]: Finished difference Result 1316 states and 1724 transitions. [2020-09-25 10:04:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:04:32,405 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-09-25 10:04:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:32,412 INFO L225 Difference]: With dead ends: 1316 [2020-09-25 10:04:32,412 INFO L226 Difference]: Without dead ends: 897 [2020-09-25 10:04:32,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:04:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-09-25 10:04:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 633. [2020-09-25 10:04:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-09-25 10:04:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 819 transitions. [2020-09-25 10:04:32,458 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 819 transitions. Word has length 79 [2020-09-25 10:04:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:32,458 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 819 transitions. [2020-09-25 10:04:32,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:04:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 819 transitions. [2020-09-25 10:04:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 10:04:32,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:32,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:32,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:04:32,462 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:32,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:32,462 INFO L82 PathProgramCache]: Analyzing trace with hash 699841995, now seen corresponding path program 1 times [2020-09-25 10:04:32,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:32,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076880044] [2020-09-25 10:04:32,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:32,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:32,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 10:04:32,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 10:04:32,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:32,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 10:04:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:04:32,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:32,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:32,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:32,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:32,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:32,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:32,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:04:32,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:32,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:32,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:32,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:32,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:32,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:32,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:04:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:32,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:32,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:32,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:32,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:32,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:04:32,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:32,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:32,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:32,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:04:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:32,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:32,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:04:32,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:32,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:04:32,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:32,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:32,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:32,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:32,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:04:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:04:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:32,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:32,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:04:32,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:32,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:04:32,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:32,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:04:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:32,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 10:04:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:32,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:32,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:32,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:04:32,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:04:32,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:32,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:32,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:04:32,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:32,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:04:32,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:32,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 10:04:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:32,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:32,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:04:32,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:32,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:04:32,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:32,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:04:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 10:04:32,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076880044] [2020-09-25 10:04:32,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:04:32,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:04:32,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267809345] [2020-09-25 10:04:32,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:04:32,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:32,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:04:32,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:04:32,776 INFO L87 Difference]: Start difference. First operand 633 states and 819 transitions. Second operand 6 states. [2020-09-25 10:04:33,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:33,032 INFO L93 Difference]: Finished difference Result 1521 states and 1982 transitions. [2020-09-25 10:04:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:04:33,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-09-25 10:04:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:33,038 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 10:04:33,039 INFO L226 Difference]: Without dead ends: 902 [2020-09-25 10:04:33,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:04:33,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-09-25 10:04:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 633. [2020-09-25 10:04:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-09-25 10:04:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 815 transitions. [2020-09-25 10:04:33,069 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 815 transitions. Word has length 102 [2020-09-25 10:04:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:33,069 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 815 transitions. [2020-09-25 10:04:33,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:04:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 815 transitions. [2020-09-25 10:04:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 10:04:33,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:33,072 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:33,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:04:33,072 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:33,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:33,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-25 10:04:33,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:33,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416258557] [2020-09-25 10:04:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 10:04:33,091 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 10:04:33,091 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 10:04:33,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:04:33,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:04:33 BoogieIcfgContainer [2020-09-25 10:04:33,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:04:33,128 INFO L168 Benchmark]: Toolchain (without parser) took 12524.45 ms. Allocated memory was 140.0 MB in the beginning and 326.6 MB in the end (delta: 186.6 MB). Free memory was 103.4 MB in the beginning and 189.2 MB in the end (delta: -85.8 MB). Peak memory consumption was 100.9 MB. Max. memory is 7.1 GB. [2020-09-25 10:04:33,129 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 10:04:33,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.44 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 92.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:04:33,131 INFO L168 Benchmark]: Boogie Preprocessor took 136.58 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.7 MB in the beginning and 180.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:04:33,131 INFO L168 Benchmark]: RCFGBuilder took 486.94 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 158.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:04:33,132 INFO L168 Benchmark]: TraceAbstraction took 11531.52 ms. Allocated memory was 202.4 MB in the beginning and 326.6 MB in the end (delta: 124.3 MB). Free memory was 158.0 MB in the beginning and 189.2 MB in the end (delta: -31.2 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:04:33,136 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 359.44 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 92.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.58 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.7 MB in the beginning and 180.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.94 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 158.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11531.52 ms. Allocated memory was 202.4 MB in the beginning and 326.6 MB in the end (delta: 124.3 MB). Free memory was 158.0 MB in the beginning and 189.2 MB in the end (delta: -31.2 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.4s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 675 SDtfs, 1316 SDslu, 1770 SDs, 0 SdLazy, 985 SolverSat, 372 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=633occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 1002 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 477 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 370 ConstructedInterpolants, 0 QuantifiedInterpolants, 71058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 74/102 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...