/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=SMALLEST --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_spec2_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:58:59,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:58:59,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:58:59,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:58:59,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:58:59,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:58:59,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:58:59,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:58:59,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:58:59,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:58:59,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:58:59,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:58:59,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:58:59,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:58:59,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:58:59,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:58:59,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:58:59,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:58:59,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:58:59,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:58:59,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:58:59,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:58:59,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:58:59,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:58:59,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:58:59,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:58:59,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:58:59,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:58:59,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:58:59,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:58:59,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:58:59,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:58:59,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:58:59,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:58:59,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:58:59,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:58:59,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:58:59,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:58:59,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:58:59,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:58:59,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:58:59,314 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 17:58:59,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:58:59,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:58:59,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:58:59,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:58:59,340 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:58:59,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:58:59,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:58:59,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:58:59,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:58:59,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:58:59,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:58:59,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:58:59,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:58:59,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:58:59,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:58:59,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:58:59,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:58:59,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:58:59,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:58:59,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:58:59,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:58:59,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:58:59,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:58:59,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:58:59,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:58:59,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:58:59,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:58:59,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:58:59,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:58:59,345 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 17:58:59,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:58:59,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:58:59,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:58:59,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:58:59,820 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:58:59,821 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-09-24 17:58:59,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1f752174/f35a0ff1681142798effa185c62ccf4d/FLAGa95483ee9 [2020-09-24 17:59:00,502 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:59:00,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-09-24 17:59:00,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1f752174/f35a0ff1681142798effa185c62ccf4d/FLAGa95483ee9 [2020-09-24 17:59:00,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1f752174/f35a0ff1681142798effa185c62ccf4d [2020-09-24 17:59:00,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:59:00,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:59:00,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:59:00,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:59:00,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:59:00,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:59:00" (1/1) ... [2020-09-24 17:59:00,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db1276a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:00, skipping insertion in model container [2020-09-24 17:59:00,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:59:00" (1/1) ... [2020-09-24 17:59:00,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:59:00,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:59:01,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:59:01,246 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:59:01,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:59:01,467 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:59:01,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01 WrapperNode [2020-09-24 17:59:01,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:59:01,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:59:01,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:59:01,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:59:01,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01" (1/1) ... [2020-09-24 17:59:01,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01" (1/1) ... [2020-09-24 17:59:01,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01" (1/1) ... [2020-09-24 17:59:01,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01" (1/1) ... [2020-09-24 17:59:01,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01" (1/1) ... [2020-09-24 17:59:01,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01" (1/1) ... [2020-09-24 17:59:01,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01" (1/1) ... [2020-09-24 17:59:01,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:59:01,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:59:01,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:59:01,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:59:01,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01" (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 17:59:01,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:59:01,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:59:01,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 17:59:01,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 17:59:01,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 17:59:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 17:59:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 17:59:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 17:59:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 17:59:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 17:59:01,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 17:59:01,646 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 17:59:01,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 17:59:01,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 17:59:01,646 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 17:59:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 17:59:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 17:59:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 17:59:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 17:59:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 17:59:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 17:59:01,648 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 17:59:01,648 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 17:59:01,648 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 17:59:01,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 17:59:01,649 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 17:59:01,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 17:59:01,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 17:59:01,649 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 17:59:01,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 17:59:01,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 17:59:01,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 17:59:01,650 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 17:59:01,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 17:59:01,650 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 17:59:01,650 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 17:59:01,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 17:59:01,651 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 17:59:01,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:59:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:59:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:59:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 17:59:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 17:59:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 17:59:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 17:59:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 17:59:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 17:59:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 17:59:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:59:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:59:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 17:59:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:59:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:59:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:59:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:59:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 17:59:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:59:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 17:59:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 17:59:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:59:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 17:59:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 17:59:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:59:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 17:59:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 17:59:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 17:59:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 17:59:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 17:59:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 17:59:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 17:59:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 17:59:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 17:59:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 17:59:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 17:59:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 17:59:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 17:59:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 17:59:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 17:59:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 17:59:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 17:59:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 17:59:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 17:59:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 17:59:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 17:59:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 17:59:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 17:59:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 17:59:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 17:59:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:59:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:59:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 17:59:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:59:02,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:59:02,762 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 17:59:02,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:59:02 BoogieIcfgContainer [2020-09-24 17:59:02,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:59:02,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:59:02,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:59:02,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:59:02,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:59:00" (1/3) ... [2020-09-24 17:59:02,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a343a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:59:02, skipping insertion in model container [2020-09-24 17:59:02,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:59:01" (2/3) ... [2020-09-24 17:59:02,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a343a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:59:02, skipping insertion in model container [2020-09-24 17:59:02,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:59:02" (3/3) ... [2020-09-24 17:59:02,779 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2020-09-24 17:59:02,790 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:59:02,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:59:02,824 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:59:02,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:59:02,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:59:02,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:59:02,859 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:59:02,859 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:59:02,859 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:59:02,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:59:02,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:59:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-09-24 17:59:02,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 17:59:02,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:59:02,910 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 17:59:02,911 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:59:02,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:59:02,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1518186743, now seen corresponding path program 1 times [2020-09-24 17:59:02,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:59:02,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632107940] [2020-09-24 17:59:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:59:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:03,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:08,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:08,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 17:59:08,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:59:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-09-24 17:59:08,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-24 17:59:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:08,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 17:59:08,768 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:59:08,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:59:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:08,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:08,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:59:08,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 17:59:08,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 17:59:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:08,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:08,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:08,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:08,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:08,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:59:08,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:08,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:08,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:08,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 17:59:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:08,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:08,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:08,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:08,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:09,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:09,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 17:59:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:09,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:09,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:09,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:09,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:09,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:59:09,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:09,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:09,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:09,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:09,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:09,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:59:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:09,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:09,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:09,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:09,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:09,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 17:59:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:09,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:09,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:09,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:59:09,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:59:09,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:09,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:09,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 17:59:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:09,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:09,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:09,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:09,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:59:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 17:59:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:09,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:09,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:09,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:09,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:09,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:09,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:59:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:09,107 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 17:59:09,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632107940] [2020-09-24 17:59:09,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:59:09,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:59:09,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151460689] [2020-09-24 17:59:09,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:59:09,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:59:09,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:59:09,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:59:09,142 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-09-24 17:59:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:59:10,406 INFO L93 Difference]: Finished difference Result 468 states and 552 transitions. [2020-09-24 17:59:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:59:10,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-24 17:59:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:59:10,428 INFO L225 Difference]: With dead ends: 468 [2020-09-24 17:59:10,428 INFO L226 Difference]: Without dead ends: 300 [2020-09-24 17:59:10,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:59:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-24 17:59:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 253. [2020-09-24 17:59:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-09-24 17:59:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 274 transitions. [2020-09-24 17:59:10,542 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 274 transitions. Word has length 148 [2020-09-24 17:59:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:59:10,543 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 274 transitions. [2020-09-24 17:59:10,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:59:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 274 transitions. [2020-09-24 17:59:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 17:59:10,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:59:10,552 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] [2020-09-24 17:59:10,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:59:10,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:59:10,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:59:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1991313851, now seen corresponding path program 1 times [2020-09-24 17:59:10,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:59:10,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956508667] [2020-09-24 17:59:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:59:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:12,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:15,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:15,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 17:59:15,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 17:59:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 17:59:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 17:59:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:59:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:15,973 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:59:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:59:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:16,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:16,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:59:16,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-24 17:59:16,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 17:59:16,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 17:59:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:16,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:16,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:16,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:16,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:59:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 17:59:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:16,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:16,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:16,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:16,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:59:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 17:59:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:16,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:16,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:16,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:16,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:16,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:59:16,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:59:16,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:16,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:59:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:16,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:16,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:16,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:16,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:59:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 17:59:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:16,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:16,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:59:16,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:16,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 17:59:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:16,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 17:59:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:16,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:16,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:16,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:59:16,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:59:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 17:59:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:16,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:16,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:16,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:16,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:59:16,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:59:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:16,407 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 17:59:16,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956508667] [2020-09-24 17:59:16,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:59:16,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:59:16,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059850306] [2020-09-24 17:59:16,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:59:16,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:59:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:59:16,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:59:16,411 INFO L87 Difference]: Start difference. First operand 253 states and 274 transitions. Second operand 5 states. [2020-09-24 17:59:16,952 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 17:59:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:59:17,861 INFO L93 Difference]: Finished difference Result 438 states and 503 transitions. [2020-09-24 17:59:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:59:17,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-24 17:59:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:59:17,867 INFO L225 Difference]: With dead ends: 438 [2020-09-24 17:59:17,867 INFO L226 Difference]: Without dead ends: 300 [2020-09-24 17:59:17,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 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 17:59:17,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-24 17:59:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 253. [2020-09-24 17:59:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-09-24 17:59:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 273 transitions. [2020-09-24 17:59:17,916 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 273 transitions. Word has length 149 [2020-09-24 17:59:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:59:17,917 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 273 transitions. [2020-09-24 17:59:17,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:59:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 273 transitions. [2020-09-24 17:59:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 17:59:17,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:59:17,920 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 17:59:17,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:59:17,921 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:59:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:59:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1239391004, now seen corresponding path program 1 times [2020-09-24 17:59:17,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:59:17,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828433819] [2020-09-24 17:59:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:59:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:18,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:22,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 17:59:23,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 17:59:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-09-24 17:59:23,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-24 17:59:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 17:59:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:23,494 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:59:23,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:59:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:59:23,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 17:59:23,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 17:59:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:23,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:59:23,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 17:59:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:23,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:59:23,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:23,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:23,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 17:59:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:23,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:59:23,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:59:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:23,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:59:23,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:23,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 17:59:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:59:23,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:23,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:23,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 17:59:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:59:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:59:23,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 17:59:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:23,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:59:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:23,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:59:23,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 17:59:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:23,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:59:23,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:59:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:23,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 17:59:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:23,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:23,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:23,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:59:23,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:59:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:23,731 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 17:59:23,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828433819] [2020-09-24 17:59:23,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:59:23,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:59:23,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805014549] [2020-09-24 17:59:23,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:59:23,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:59:23,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:59:23,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:59:23,734 INFO L87 Difference]: Start difference. First operand 253 states and 273 transitions. Second operand 6 states. [2020-09-24 17:59:24,410 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 17:59:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:59:25,504 INFO L93 Difference]: Finished difference Result 421 states and 481 transitions. [2020-09-24 17:59:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:59:25,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-24 17:59:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:59:25,507 INFO L225 Difference]: With dead ends: 421 [2020-09-24 17:59:25,508 INFO L226 Difference]: Without dead ends: 313 [2020-09-24 17:59:25,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:59:25,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-09-24 17:59:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 243. [2020-09-24 17:59:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-24 17:59:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 260 transitions. [2020-09-24 17:59:25,548 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 260 transitions. Word has length 157 [2020-09-24 17:59:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:59:25,549 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 260 transitions. [2020-09-24 17:59:25,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:59:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 260 transitions. [2020-09-24 17:59:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 17:59:25,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:59:25,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:59:25,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:59:25,552 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:59:25,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:59:25,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1554497374, now seen corresponding path program 1 times [2020-09-24 17:59:25,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:59:25,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427630150] [2020-09-24 17:59:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:59:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:27,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:30,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:30,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 17:59:30,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 17:59:30,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 17:59:30,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:59:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-24 17:59:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:59:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:30,962 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:59:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:59:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:59:31,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 17:59:31,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:31,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:31,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 17:59:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:31,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:31,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:59:31,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:31,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:31,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 17:59:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:31,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:59:31,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:31,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 17:59:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:31,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:31,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:59:31,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:31,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:59:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:31,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:59:31,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:31,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 17:59:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:59:31,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:59:31,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 17:59:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:31,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:59:31,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:59:31,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:59:31,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:59:31,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:59:31,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:31,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:59:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:31,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:31,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:59:31,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:59:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-24 17:59:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:59:31,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:59:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:31,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-24 17:59:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:31,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:31,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:31,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:31,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:59:31,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:59:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:31,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:31,404 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 17:59:31,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427630150] [2020-09-24 17:59:31,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:59:31,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:59:31,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74088917] [2020-09-24 17:59:31,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:59:31,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:59:31,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:59:31,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:59:31,411 INFO L87 Difference]: Start difference. First operand 243 states and 260 transitions. Second operand 8 states. [2020-09-24 17:59:32,118 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 17:59:33,536 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 17:59:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:59:34,281 INFO L93 Difference]: Finished difference Result 547 states and 628 transitions. [2020-09-24 17:59:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:59:34,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-09-24 17:59:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:59:34,286 INFO L225 Difference]: With dead ends: 547 [2020-09-24 17:59:34,286 INFO L226 Difference]: Without dead ends: 419 [2020-09-24 17:59:34,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:59:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-09-24 17:59:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 348. [2020-09-24 17:59:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-09-24 17:59:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 377 transitions. [2020-09-24 17:59:34,342 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 377 transitions. Word has length 166 [2020-09-24 17:59:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:59:34,342 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 377 transitions. [2020-09-24 17:59:34,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:59:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 377 transitions. [2020-09-24 17:59:34,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 17:59:34,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:59:34,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:34,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:59:34,346 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:59:34,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:59:34,346 INFO L82 PathProgramCache]: Analyzing trace with hash 590655546, now seen corresponding path program 1 times [2020-09-24 17:59:34,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:59:34,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367024689] [2020-09-24 17:59:34,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:59:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:37,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-24 17:59:39,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:59:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 17:59:39,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:59:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-09-24 17:59:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 17:59:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:39,730 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:59:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:59:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:59:39,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:39,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 17:59:39,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:39,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 17:59:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:59:39,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 17:59:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:39,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:59:39,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 17:59:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:39,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:39,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:39,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:39,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:39,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:59:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:39,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:39,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:59:39,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:39,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:39,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 17:59:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:59:39,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:59:39,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:59:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 17:59:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 17:59:39,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:59:39,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 17:59:39,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:39,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:59:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:59:39,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:39,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:59:39,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 17:59:39,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:59:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:39,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:39,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:39,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:59:39,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:39,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:59:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:59:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 17:59:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:40,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:40,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:40,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:59:40,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:40,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:40,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:40,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:59:40,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-24 17:59:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:40,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:40,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:40,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:59:40,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:59:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:59:40,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-24 17:59:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:40,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:59:40,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:59:40,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:59:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:59:40,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:59:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:59:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:59:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:59:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:59:40,092 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 17:59:40,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367024689] [2020-09-24 17:59:40,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:59:40,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 17:59:40,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195229920] [2020-09-24 17:59:40,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:59:40,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:59:40,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:59:40,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:59:40,096 INFO L87 Difference]: Start difference. First operand 348 states and 377 transitions. Second operand 10 states. [2020-09-24 17:59:40,611 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 17:59:42,183 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 17:59:42,475 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 17:59:42,831 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 17:59:43,646 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 17:59:43,947 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 17:59:44,307 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 17:59:44,635 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-24 17:59:44,934 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 17:59:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:59:45,128 INFO L93 Difference]: Finished difference Result 650 states and 740 transitions. [2020-09-24 17:59:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 17:59:45,129 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2020-09-24 17:59:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:59:45,133 INFO L225 Difference]: With dead ends: 650 [2020-09-24 17:59:45,133 INFO L226 Difference]: Without dead ends: 417 [2020-09-24 17:59:45,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:59:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-24 17:59:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 346. [2020-09-24 17:59:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-09-24 17:59:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 373 transitions. [2020-09-24 17:59:45,182 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 373 transitions. Word has length 190 [2020-09-24 17:59:45,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:59:45,183 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 373 transitions. [2020-09-24 17:59:45,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:59:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 373 transitions. [2020-09-24 17:59:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 17:59:45,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:59:45,186 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:45,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:59:45,187 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:59:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:59:45,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1711368304, now seen corresponding path program 1 times [2020-09-24 17:59:45,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:59:45,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136580903] [2020-09-24 17:59:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:59:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:59:45,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:45,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:59:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking...