/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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 08:58:03,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:58:03,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:58:03,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:58:03,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:58:03,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:58:03,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:58:03,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:58:03,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:58:03,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:58:03,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:58:03,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:58:03,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:58:03,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:58:03,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:58:03,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:58:03,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:58:03,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:58:03,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:58:03,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:58:03,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:58:03,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:58:03,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:58:03,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:58:03,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:58:03,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:58:03,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:58:03,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:58:03,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:58:03,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:58:03,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:58:03,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:58:03,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:58:03,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:58:03,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:58:03,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:58:03,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:58:03,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:58:03,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:58:03,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:58:03,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:58:03,145 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 08:58:03,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:58:03,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:58:03,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:58:03,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:58:03,199 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:58:03,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:58:03,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:58:03,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:58:03,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:58:03,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:58:03,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:58:03,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:58:03,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:58:03,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:58:03,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:58:03,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:58:03,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:58:03,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:58:03,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:58:03,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:58:03,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:58:03,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:58:03,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:58:03,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:58:03,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:58:03,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:58:03,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:58:03,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:58:03,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:58:03,205 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:58:03,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:58:03,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:58:03,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:58:03,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:58:03,690 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:58:03,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 08:58:03,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeeca6892/377d74cfa63f42f78684433a3e01a06c/FLAG41ada58ce [2020-09-25 08:58:04,324 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:58:04,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 08:58:04,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeeca6892/377d74cfa63f42f78684433a3e01a06c/FLAG41ada58ce [2020-09-25 08:58:04,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeeca6892/377d74cfa63f42f78684433a3e01a06c [2020-09-25 08:58:04,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:58:04,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:58:04,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:58:04,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:58:04,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:58:04,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:58:04" (1/1) ... [2020-09-25 08:58:04,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:04, skipping insertion in model container [2020-09-25 08:58:04,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:58:04" (1/1) ... [2020-09-25 08:58:04,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:58:04,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:58:04,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:58:04,979 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:58:05,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:58:05,019 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:58:05,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05 WrapperNode [2020-09-25 08:58:05,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:58:05,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:58:05,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:58:05,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:58:05,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05" (1/1) ... [2020-09-25 08:58:05,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05" (1/1) ... [2020-09-25 08:58:05,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05" (1/1) ... [2020-09-25 08:58:05,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05" (1/1) ... [2020-09-25 08:58:05,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05" (1/1) ... [2020-09-25 08:58:05,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05" (1/1) ... [2020-09-25 08:58:05,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05" (1/1) ... [2020-09-25 08:58:05,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:58:05,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:58:05,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:58:05,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:58:05,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05" (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 08:58:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:58:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:58:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 08:58:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 08:58:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 08:58:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-25 08:58:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-25 08:58:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-25 08:58:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-25 08:58:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-25 08:58:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-25 08:58:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:58:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:58:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 08:58:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:58:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 08:58:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 08:58:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-25 08:58:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-25 08:58:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-25 08:58:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-25 08:58:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-25 08:58:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-25 08:58:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:58:05,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:58:05,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:58:05,634 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:58:05,635 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:58:05,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:58:05 BoogieIcfgContainer [2020-09-25 08:58:05,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:58:05,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:58:05,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:58:05,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:58:05,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:58:04" (1/3) ... [2020-09-25 08:58:05,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46be317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:58:05, skipping insertion in model container [2020-09-25 08:58:05,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:58:05" (2/3) ... [2020-09-25 08:58:05,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46be317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:58:05, skipping insertion in model container [2020-09-25 08:58:05,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:58:05" (3/3) ... [2020-09-25 08:58:05,650 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-25 08:58:05,661 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:58:05,671 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:58:05,692 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:58:05,725 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:58:05,725 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:58:05,725 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:58:05,725 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:58:05,725 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:58:05,726 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:58:05,726 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:58:05,726 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:58:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 08:58:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 08:58:05,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:58:05,760 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 08:58:05,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:58:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:58:05,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-25 08:58:05,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:58:05,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566625636] [2020-09-25 08:58:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:58:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:06,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:58:06,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:58:06,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 08:58:06,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:06,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:58:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 08:58:06,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:58:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:06,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:06,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:06,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:58:06,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:06,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:06,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:06,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:58:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:06,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:06,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:58:06,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:06,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:06,261 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 08:58:06,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566625636] [2020-09-25 08:58:06,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:58:06,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:58:06,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203373448] [2020-09-25 08:58:06,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:58:06,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:58:06,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:58:06,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:58:06,302 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-09-25 08:58:06,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:58:06,508 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2020-09-25 08:58:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:58:06,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-25 08:58:06,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:58:06,528 INFO L225 Difference]: With dead ends: 199 [2020-09-25 08:58:06,528 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 08:58:06,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:58:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 08:58:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-09-25 08:58:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 08:58:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-09-25 08:58:06,601 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 19 [2020-09-25 08:58:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:58:06,602 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-09-25 08:58:06,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:58:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-09-25 08:58:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 08:58:06,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:58:06,603 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] [2020-09-25 08:58:06,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:58:06,604 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:58:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:58:06,605 INFO L82 PathProgramCache]: Analyzing trace with hash 837576233, now seen corresponding path program 1 times [2020-09-25 08:58:06,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:58:06,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665818377] [2020-09-25 08:58:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:58:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:58:06,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 08:58:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:06,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:58:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:58:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 08:58:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 08:58:06,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:58:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:06,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:06,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:06,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:06,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:06,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:58:06,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:06,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:58:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:06,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:58:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:06,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:06,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:06,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:06,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:06,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:58:06,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:06,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:58:06,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:06,896 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 08:58:06,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665818377] [2020-09-25 08:58:06,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:58:06,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:58:06,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609424205] [2020-09-25 08:58:06,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:58:06,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:58:06,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:58:06,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:58:06,901 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 5 states. [2020-09-25 08:58:07,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:58:07,200 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2020-09-25 08:58:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:58:07,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-25 08:58:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:58:07,207 INFO L225 Difference]: With dead ends: 171 [2020-09-25 08:58:07,208 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 08:58:07,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 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 08:58:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 08:58:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 08:58:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 08:58:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-25 08:58:07,269 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2020-09-25 08:58:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:58:07,270 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-25 08:58:07,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:58:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-25 08:58:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 08:58:07,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:58:07,273 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 08:58:07,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:58:07,273 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:58:07,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:58:07,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-25 08:58:07,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:58:07,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966807724] [2020-09-25 08:58:07,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:58:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:07,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:07,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:07,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:58:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:58:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-09-25 08:58:07,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:07,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:58:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 08:58:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:58:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:07,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:58:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:07,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:07,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:58:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:07,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:07,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:58:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:07,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:07,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:07,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:07,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:58:07,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:07,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:58:07,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:07,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:58:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:07,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:07,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:07,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:07,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:58:07,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:07,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:58:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:07,904 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 08:58:07,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966807724] [2020-09-25 08:58:07,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:58:07,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:58:07,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2884402] [2020-09-25 08:58:07,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:58:07,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:58:07,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:58:07,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:58:07,907 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-25 08:58:08,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:58:08,299 INFO L93 Difference]: Finished difference Result 552 states and 686 transitions. [2020-09-25 08:58:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:58:08,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 08:58:08,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:58:08,305 INFO L225 Difference]: With dead ends: 552 [2020-09-25 08:58:08,305 INFO L226 Difference]: Without dead ends: 406 [2020-09-25 08:58:08,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 08:58:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-09-25 08:58:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 273. [2020-09-25 08:58:08,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-09-25 08:58:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 328 transitions. [2020-09-25 08:58:08,342 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 328 transitions. Word has length 38 [2020-09-25 08:58:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:58:08,342 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 328 transitions. [2020-09-25 08:58:08,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:58:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 328 transitions. [2020-09-25 08:58:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 08:58:08,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:58:08,345 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 08:58:08,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:58:08,345 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:58:08,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:58:08,346 INFO L82 PathProgramCache]: Analyzing trace with hash -624757564, now seen corresponding path program 1 times [2020-09-25 08:58:08,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:58:08,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702884395] [2020-09-25 08:58:08,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:58:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:08,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:08,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:08,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:58:08,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 08:58:08,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:08,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:58:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:58:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:08,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:58:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:08,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:08,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:08,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:08,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:58:08,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:08,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:08,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:08,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:58:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:08,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:08,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:08,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:08,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:08,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:58:08,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:08,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:08,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:08,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:08,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:58:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:58:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:58:08,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:08,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:58:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:58:08,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702884395] [2020-09-25 08:58:08,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:58:08,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:58:08,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404146072] [2020-09-25 08:58:08,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:58:08,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:58:08,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:58:08,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:58:08,509 INFO L87 Difference]: Start difference. First operand 273 states and 328 transitions. Second operand 6 states. [2020-09-25 08:58:08,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:58:08,758 INFO L93 Difference]: Finished difference Result 672 states and 839 transitions. [2020-09-25 08:58:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:58:08,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 08:58:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:58:08,763 INFO L225 Difference]: With dead ends: 672 [2020-09-25 08:58:08,763 INFO L226 Difference]: Without dead ends: 413 [2020-09-25 08:58:08,765 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 08:58:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-25 08:58:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 313. [2020-09-25 08:58:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-09-25 08:58:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 381 transitions. [2020-09-25 08:58:08,794 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 381 transitions. Word has length 38 [2020-09-25 08:58:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:58:08,794 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 381 transitions. [2020-09-25 08:58:08,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:58:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 381 transitions. [2020-09-25 08:58:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 08:58:08,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:58:08,798 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 08:58:08,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:58:08,799 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:58:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:58:08,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2144371133, now seen corresponding path program 1 times [2020-09-25 08:58:08,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:58:08,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312756002] [2020-09-25 08:58:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:58:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:08,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:08,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:09,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:09,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:58:09,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:58:09,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 08:58:09,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:09,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:58:09,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:58:09,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:58:09,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:09,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:58:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:09,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:09,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:09,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:58:09,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:09,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:09,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:58:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:09,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:09,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:09,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:58:09,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:09,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:58:09,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:09,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 08:58:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:09,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:09,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:58:09,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:58:09,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:09,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:58:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:09,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 08:58:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:09,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:09,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:09,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:09,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:58:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:09,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:58:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:58:09,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312756002] [2020-09-25 08:58:09,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:58:09,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:58:09,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505096168] [2020-09-25 08:58:09,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:58:09,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:58:09,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:58:09,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:58:09,192 INFO L87 Difference]: Start difference. First operand 313 states and 381 transitions. Second operand 8 states. [2020-09-25 08:58:09,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:58:09,574 INFO L93 Difference]: Finished difference Result 954 states and 1237 transitions. [2020-09-25 08:58:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:58:09,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 08:58:09,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:58:09,580 INFO L225 Difference]: With dead ends: 954 [2020-09-25 08:58:09,581 INFO L226 Difference]: Without dead ends: 655 [2020-09-25 08:58:09,582 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 08:58:09,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2020-09-25 08:58:09,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 433. [2020-09-25 08:58:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-25 08:58:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 544 transitions. [2020-09-25 08:58:09,608 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 544 transitions. Word has length 59 [2020-09-25 08:58:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:58:09,609 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 544 transitions. [2020-09-25 08:58:09,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:58:09,609 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 544 transitions. [2020-09-25 08:58:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 08:58:09,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:58:09,612 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 08:58:09,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:58:09,612 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:58:09,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:58:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash -204784227, now seen corresponding path program 1 times [2020-09-25 08:58:09,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:58:09,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448777788] [2020-09-25 08:58:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:58:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:09,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:10,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:10,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 08:58:10,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:58:10,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-09-25 08:58:10,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:10,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:58:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:58:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 08:58:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:10,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:58:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:10,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:10,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:10,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:10,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:58:10,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:10,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:58:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:10,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:10,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:10,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:10,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:58:10,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:10,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:10,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:10,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:58:10,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:58:10,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 08:58:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:10,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:10,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:10,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:58:10,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:58:10,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:10,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:58:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:58:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:58:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:10,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:58:10,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:58:10,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:10,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:58:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:58:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 08:58:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:10,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:10,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:58:10,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:10,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:58:10,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:10,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:58:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:10,723 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 08:58:10,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448777788] [2020-09-25 08:58:10,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:58:10,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 08:58:10,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37552072] [2020-09-25 08:58:10,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:58:10,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:58:10,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:58:10,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:58:10,726 INFO L87 Difference]: Start difference. First operand 433 states and 544 transitions. Second operand 10 states. [2020-09-25 08:58:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:58:11,269 INFO L93 Difference]: Finished difference Result 1316 states and 1724 transitions. [2020-09-25 08:58:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:58:11,270 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-09-25 08:58:11,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:58:11,279 INFO L225 Difference]: With dead ends: 1316 [2020-09-25 08:58:11,279 INFO L226 Difference]: Without dead ends: 897 [2020-09-25 08:58:11,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:58:11,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-09-25 08:58:11,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 633. [2020-09-25 08:58:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-09-25 08:58:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 819 transitions. [2020-09-25 08:58:11,325 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 819 transitions. Word has length 79 [2020-09-25 08:58:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:58:11,326 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 819 transitions. [2020-09-25 08:58:11,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:58:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 819 transitions. [2020-09-25 08:58:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 08:58:11,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:58:11,332 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 08:58:11,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:58:11,332 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:58:11,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:58:11,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-25 08:58:11,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:58:11,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110360685] [2020-09-25 08:58:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:58:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:58:11,360 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:58:11,361 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:58:11,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:58:11,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:58:11 BoogieIcfgContainer [2020-09-25 08:58:11,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:58:11,407 INFO L168 Benchmark]: Toolchain (without parser) took 6732.42 ms. Allocated memory was 146.8 MB in the beginning and 282.1 MB in the end (delta: 135.3 MB). Free memory was 103.0 MB in the beginning and 109.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 129.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:58:11,408 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:58:11,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.54 ms. Allocated memory is still 146.8 MB. Free memory was 102.4 MB in the beginning and 92.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:58:11,416 INFO L168 Benchmark]: Boogie Preprocessor took 133.19 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 181.3 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:58:11,417 INFO L168 Benchmark]: RCFGBuilder took 486.87 ms. Allocated memory is still 203.4 MB. Free memory was 181.3 MB in the beginning and 159.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-25 08:58:11,418 INFO L168 Benchmark]: TraceAbstraction took 5760.29 ms. Allocated memory was 203.4 MB in the beginning and 282.1 MB in the end (delta: 78.6 MB). Free memory was 159.1 MB in the beginning and 109.0 MB in the end (delta: 50.2 MB). Peak memory consumption was 128.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:58:11,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.54 ms. Allocated memory is still 146.8 MB. Free memory was 102.4 MB in the beginning and 92.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.19 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 181.3 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.87 ms. Allocated memory is still 203.4 MB. Free memory was 181.3 MB in the beginning and 159.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5760.29 ms. Allocated memory was 203.4 MB in the beginning and 282.1 MB in the end (delta: 78.6 MB). Free memory was 159.1 MB in the beginning and 109.0 MB in the end (delta: 50.2 MB). Peak memory consumption was 128.8 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: 5.6s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 604 SDtfs, 1327 SDslu, 1463 SDs, 0 SdLazy, 884 SolverSat, 365 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=633occurred in iteration=6, 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, 728 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 355 NumberOfCodeBlocks, 355 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 30894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 3/31 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...