/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:15:34,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:15:34,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:15:34,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:15:34,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:15:34,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:15:34,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:15:34,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:15:34,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:15:34,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:15:34,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:15:34,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:15:34,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:15:34,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:15:34,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:15:34,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:15:34,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:15:34,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:15:34,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:15:34,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:15:34,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:15:34,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:15:34,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:15:34,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:15:34,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:15:34,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:15:34,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:15:34,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:15:34,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:15:34,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:15:34,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:15:34,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:15:34,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:15:34,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:15:34,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:15:34,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:15:34,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:15:34,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:15:34,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:15:34,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:15:34,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:15:34,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:15:34,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:15:34,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:15:34,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:15:34,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:15:34,678 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:15:34,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:15:34,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:15:34,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:15:34,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:15:34,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:15:34,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:15:34,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:15:34,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:15:34,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:15:34,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:15:34,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:15:34,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:15:34,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:15:34,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:15:34,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:15:34,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:15:34,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:15:34,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:15:34,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:15:34,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:15:34,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:15:34,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:15:34,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:15:34,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:15:34,683 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:15:35,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:15:35,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:15:35,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:15:35,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:15:35,193 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:15:35,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product23.cil.c [2020-09-24 20:15:35,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44ac55d27/60d8388bcc864e508a7cb7d7755e39dd/FLAG0c057a2b6 [2020-09-24 20:15:35,898 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:15:35,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product23.cil.c [2020-09-24 20:15:35,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44ac55d27/60d8388bcc864e508a7cb7d7755e39dd/FLAG0c057a2b6 [2020-09-24 20:15:36,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44ac55d27/60d8388bcc864e508a7cb7d7755e39dd [2020-09-24 20:15:36,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:15:36,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:15:36,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:15:36,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:15:36,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:15:36,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:15:36" (1/1) ... [2020-09-24 20:15:36,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36, skipping insertion in model container [2020-09-24 20:15:36,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:15:36" (1/1) ... [2020-09-24 20:15:36,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:15:36,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:15:36,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:15:36,743 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:15:36,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:15:36,881 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:15:36,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36 WrapperNode [2020-09-24 20:15:36,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:15:36,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:15:36,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:15:36,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:15:36,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36" (1/1) ... [2020-09-24 20:15:36,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36" (1/1) ... [2020-09-24 20:15:36,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36" (1/1) ... [2020-09-24 20:15:36,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36" (1/1) ... [2020-09-24 20:15:36,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36" (1/1) ... [2020-09-24 20:15:36,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36" (1/1) ... [2020-09-24 20:15:36,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36" (1/1) ... [2020-09-24 20:15:37,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:15:37,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:15:37,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:15:37,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:15:37,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:15:37,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:15:37,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:15:37,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 20:15:37,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 20:15:37,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 20:15:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 20:15:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 20:15:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 20:15:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 20:15:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 20:15:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 20:15:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 20:15:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 20:15:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 20:15:37,131 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 20:15:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 20:15:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 20:15:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 20:15:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 20:15:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 20:15:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 20:15:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 20:15:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 20:15:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 20:15:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 20:15:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 20:15:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 20:15:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 20:15:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 20:15:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 20:15:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 20:15:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 20:15:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 20:15:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 20:15:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 20:15:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 20:15:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 20:15:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 20:15:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:15:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:15:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:15:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 20:15:37,137 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 20:15:37,137 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 20:15:37,137 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:15:37,137 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:15:37,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 20:15:37,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:15:37,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:15:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:15:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:15:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 20:15:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:15:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 20:15:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 20:15:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:15:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 20:15:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 20:15:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:15:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 20:15:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 20:15:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 20:15:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 20:15:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 20:15:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 20:15:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 20:15:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 20:15:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 20:15:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 20:15:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 20:15:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 20:15:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 20:15:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 20:15:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 20:15:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 20:15:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 20:15:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 20:15:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 20:15:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 20:15:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 20:15:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 20:15:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 20:15:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 20:15:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 20:15:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 20:15:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 20:15:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 20:15:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 20:15:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:15:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:15:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:15:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:15:38,416 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:15:38,417 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 20:15:38,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:15:38 BoogieIcfgContainer [2020-09-24 20:15:38,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:15:38,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:15:38,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:15:38,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:15:38,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:15:36" (1/3) ... [2020-09-24 20:15:38,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9c02ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:15:38, skipping insertion in model container [2020-09-24 20:15:38,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:15:36" (2/3) ... [2020-09-24 20:15:38,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9c02ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:15:38, skipping insertion in model container [2020-09-24 20:15:38,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:15:38" (3/3) ... [2020-09-24 20:15:38,434 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product23.cil.c [2020-09-24 20:15:38,448 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:15:38,464 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:15:38,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:15:38,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:15:38,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:15:38,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:15:38,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:15:38,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:15:38,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:15:38,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:15:38,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:15:38,560 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-09-24 20:15:38,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 20:15:38,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:15:38,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:15:38,581 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:15:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:15:38,589 INFO L82 PathProgramCache]: Analyzing trace with hash 511028723, now seen corresponding path program 1 times [2020-09-24 20:15:38,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:15:38,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816756826] [2020-09-24 20:15:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:15:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:39,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:40,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:41,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:44,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:44,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 20:15:44,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:15:44,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-09-24 20:15:44,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:15:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 20:15:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 20:15:44,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:15:44,611 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:15:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:15:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:44,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:44,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:15:44,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:44,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-24 20:15:44,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:15:44,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:15:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:15:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:45,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:45,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:15:45,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:15:45,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:15:45,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:15:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:15:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:45,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:45,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:15:45,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:45,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:15:45,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:15:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:15:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:15:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:45,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:45,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:15:45,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:45,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:15:45,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:15:45,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:15:45,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:15:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:45,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:45,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:45,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:15:45,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:15:45,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:15:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:15:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 20:15:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:45,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:45,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:45,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:15:45,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:15:45,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:15:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:15:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:15:45,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 20:15:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:45,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:45,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:15:45,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:15:45,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:15:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:15:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:15:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:15:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:15:45,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816756826] [2020-09-24 20:15:45,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:15:45,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:15:45,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117962959] [2020-09-24 20:15:45,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:15:45,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:15:45,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:15:45,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:15:45,306 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 8 states. [2020-09-24 20:15:45,984 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:15:47,010 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:15:47,342 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 20:15:47,735 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:15:48,189 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:15:48,517 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:15:48,847 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:15:49,204 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:15:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:15:51,278 INFO L93 Difference]: Finished difference Result 635 states and 783 transitions. [2020-09-24 20:15:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:15:51,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 20:15:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:15:51,303 INFO L225 Difference]: With dead ends: 635 [2020-09-24 20:15:51,303 INFO L226 Difference]: Without dead ends: 440 [2020-09-24 20:15:51,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:15:51,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-09-24 20:15:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 394. [2020-09-24 20:15:51,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-24 20:15:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 449 transitions. [2020-09-24 20:15:51,458 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 449 transitions. Word has length 142 [2020-09-24 20:15:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:15:51,460 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 449 transitions. [2020-09-24 20:15:51,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:15:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 449 transitions. [2020-09-24 20:15:51,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 20:15:51,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:15:51,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:15:51,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:15:51,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:15:51,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:15:51,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1989410950, now seen corresponding path program 1 times [2020-09-24 20:15:51,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:15:51,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843362616] [2020-09-24 20:15:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:15:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:52,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:56,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:56,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 20:15:56,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:15:56,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 20:15:56,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:15:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 20:15:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:15:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:15:56,888 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:15:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:15:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:57,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:57,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:15:57,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 20:15:57,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:57,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:57,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:15:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:15:57,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:15:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:57,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:57,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:15:57,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:15:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:15:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:15:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:15:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:57,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:57,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:57,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:15:57,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 20:15:57,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:15:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:15:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:15:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:57,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:57,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:15:57,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:15:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:15:57,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:15:57,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:15:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:57,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:57,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:57,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:15:57,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:15:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:15:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:15:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:15:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:15:57,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 20:15:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:57,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:15:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:15:57,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:15:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:15:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:15:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:15:57,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 20:15:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:57,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:57,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:57,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:15:57,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:57,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:15:57,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:15:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:15:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:15:57,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:15:57,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 20:15:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:57,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:57,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:15:57,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:15:57,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:15:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:15:57,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:15:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:15:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:15:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:15:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:15:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:15:57,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843362616] [2020-09-24 20:15:57,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:15:57,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:15:57,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425448143] [2020-09-24 20:15:57,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:15:57,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:15:57,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:15:57,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:15:57,396 INFO L87 Difference]: Start difference. First operand 394 states and 449 transitions. Second operand 5 states. [2020-09-24 20:15:57,872 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:15:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:15:58,663 INFO L93 Difference]: Finished difference Result 583 states and 699 transitions. [2020-09-24 20:15:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:15:58,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 20:15:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:15:58,669 INFO L225 Difference]: With dead ends: 583 [2020-09-24 20:15:58,669 INFO L226 Difference]: Without dead ends: 288 [2020-09-24 20:15:58,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:15:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-24 20:15:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 266. [2020-09-24 20:15:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-24 20:15:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 284 transitions. [2020-09-24 20:15:58,732 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 284 transitions. Word has length 148 [2020-09-24 20:15:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:15:58,732 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 284 transitions. [2020-09-24 20:15:58,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:15:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 284 transitions. [2020-09-24 20:15:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 20:15:58,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:15:58,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:15:58,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:15:58,736 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:15:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:15:58,736 INFO L82 PathProgramCache]: Analyzing trace with hash -983133155, now seen corresponding path program 1 times [2020-09-24 20:15:58,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:15:58,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950654322] [2020-09-24 20:15:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:15:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:15:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:15:59,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:03,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:03,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 20:16:03,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:16:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 20:16:03,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:16:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 20:16:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 20:16:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:04,097 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:16:04,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:16:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:04,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:16:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-24 20:16:04,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:16:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:16:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:04,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:04,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:04,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:04,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:04,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:16:04,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:04,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:16:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:04,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:04,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:04,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:16:04,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:16:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:04,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:04,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:16:04,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:16:04,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:16:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:04,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:04,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:04,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:04,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:16:04,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:04,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:04,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 20:16:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:04,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:04,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:16:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:16:04,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:16:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:16:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:16:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 20:16:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:04,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:04,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:04,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:04,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:16:04,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:04,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:16:04,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:16:04,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 20:16:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:04,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:04,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:04,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:04,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:04,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:16:04,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:16:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:16:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:16:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:16:04,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950654322] [2020-09-24 20:16:04,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:16:04,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 20:16:04,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452553366] [2020-09-24 20:16:04,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:16:04,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:16:04,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:16:04,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:16:04,690 INFO L87 Difference]: Start difference. First operand 266 states and 284 transitions. Second operand 11 states. [2020-09-24 20:16:05,183 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:16:05,965 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:16:06,805 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-09-24 20:16:07,404 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2020-09-24 20:16:07,758 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:16:08,365 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-09-24 20:16:08,695 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:16:09,295 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2020-09-24 20:16:09,621 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:16:09,980 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:16:10,299 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:16:10,606 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:16:11,282 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 20:16:11,628 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-24 20:16:12,089 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:16:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:16:12,619 INFO L93 Difference]: Finished difference Result 460 states and 513 transitions. [2020-09-24 20:16:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 20:16:12,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 157 [2020-09-24 20:16:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:16:12,624 INFO L225 Difference]: With dead ends: 460 [2020-09-24 20:16:12,624 INFO L226 Difference]: Without dead ends: 358 [2020-09-24 20:16:12,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2020-09-24 20:16:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-24 20:16:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 331. [2020-09-24 20:16:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-09-24 20:16:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 354 transitions. [2020-09-24 20:16:12,667 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 354 transitions. Word has length 157 [2020-09-24 20:16:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:16:12,667 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 354 transitions. [2020-09-24 20:16:12,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:16:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 354 transitions. [2020-09-24 20:16:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 20:16:12,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:16:12,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:16:12,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:16:12,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:16:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:16:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash 605988112, now seen corresponding path program 1 times [2020-09-24 20:16:12,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:16:12,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778580597] [2020-09-24 20:16:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:16:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:17,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:17,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:17,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 20:16:17,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:16:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-24 20:16:17,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:16:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 20:16:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 20:16:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:18,176 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:16:18,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:16:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:16:18,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 20:16:18,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:16:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:16:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:18,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:16:18,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:18,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:16:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:16:18,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:16:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:18,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:16:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:16:18,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:16:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:18,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:16:18,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:18,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 20:16:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:16:18,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:16:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:16:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:16:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:16:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 20:16:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:16:18,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:16:18,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:16:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:16:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:16:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:16:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:16:18,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:16:18,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:16:18,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:16:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:18,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:16:18,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:16:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:16:18,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:16:18,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 20:16:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:16:18,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:16:18,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:16:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:16:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:16:18,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 20:16:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:18,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:16:18,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:16:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:16:18,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:16:18,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:16:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 20:16:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:18,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:18,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:18,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:18,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:18,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:16:18,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:16:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:16:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:16:18,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 20:16:18,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778580597] [2020-09-24 20:16:18,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:16:18,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:16:18,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874791523] [2020-09-24 20:16:18,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:16:18,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:16:18,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:16:18,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:16:18,810 INFO L87 Difference]: Start difference. First operand 331 states and 354 transitions. Second operand 10 states. [2020-09-24 20:16:19,488 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-09-24 20:16:20,141 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:16:21,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:16:21,043 INFO L93 Difference]: Finished difference Result 419 states and 458 transitions. [2020-09-24 20:16:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:16:21,045 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 196 [2020-09-24 20:16:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:16:21,046 INFO L225 Difference]: With dead ends: 419 [2020-09-24 20:16:21,046 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:16:21,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:16:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:16:21,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:16:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:16:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:16:21,048 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 196 [2020-09-24 20:16:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:16:21,048 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:16:21,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:16:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:16:21,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:16:21,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:16:21,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:16:21,245 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:16:21,621 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-24 20:16:21,985 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-24 20:16:22,271 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 24 [2020-09-24 20:16:22,443 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:16:22,797 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-24 20:16:23,141 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-24 20:16:23,302 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 191