/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:53:04,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:53:04,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:53:04,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:53:04,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:53:04,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:53:04,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:53:04,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:53:04,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:53:04,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:53:04,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:53:04,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:53:04,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:53:04,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:53:04,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:53:04,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:53:04,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:53:04,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:53:04,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:53:04,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:53:04,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:53:04,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:53:04,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:53:04,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:53:04,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:53:04,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:53:04,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:53:04,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:53:04,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:53:04,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:53:04,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:53:04,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:53:04,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:53:04,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:53:04,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:53:04,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:53:04,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:53:04,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:53:04,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:53:04,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:53:04,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:53:04,650 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 16:53:04,685 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:53:04,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:53:04,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:53:04,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:53:04,687 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:53:04,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:53:04,687 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:53:04,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:53:04,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:53:04,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:53:04,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:53:04,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:53:04,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:53:04,690 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:53:04,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:53:04,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:53:04,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:53:04,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:53:04,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:53:04,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:53:04,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:53:04,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:53:04,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:53:04,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:53:04,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:53:04,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:53:04,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:53:04,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:53:04,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:53:04,694 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;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;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;log-additional-information=true; [2020-09-24 16:53:05,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:53:05,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:53:05,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:53:05,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:53:05,232 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:53:05,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product06.cil.c [2020-09-24 16:53:05,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a928d1a/eb77b4a7d2464253be0cc8dee58dcbb6/FLAGde98b37ee [2020-09-24 16:53:05,963 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:53:05,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product06.cil.c [2020-09-24 16:53:05,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a928d1a/eb77b4a7d2464253be0cc8dee58dcbb6/FLAGde98b37ee [2020-09-24 16:53:06,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a928d1a/eb77b4a7d2464253be0cc8dee58dcbb6 [2020-09-24 16:53:06,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:53:06,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:53:06,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:53:06,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:53:06,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:53:06,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:53:06" (1/1) ... [2020-09-24 16:53:06,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8aa329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06, skipping insertion in model container [2020-09-24 16:53:06,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:53:06" (1/1) ... [2020-09-24 16:53:06,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:53:06,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:53:06,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:53:06,776 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:53:06,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:53:06,945 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:53:06,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06 WrapperNode [2020-09-24 16:53:06,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:53:06,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:53:06,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:53:06,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:53:06,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06" (1/1) ... [2020-09-24 16:53:06,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06" (1/1) ... [2020-09-24 16:53:06,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06" (1/1) ... [2020-09-24 16:53:06,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06" (1/1) ... [2020-09-24 16:53:07,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06" (1/1) ... [2020-09-24 16:53:07,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06" (1/1) ... [2020-09-24 16:53:07,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06" (1/1) ... [2020-09-24 16:53:07,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:53:07,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:53:07,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:53:07,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:53:07,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06" (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 16:53:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:53:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:53:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:53:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:53:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:53:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:53:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:53:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:53:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:53:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:53:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:53:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:53:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:53:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:53:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:53:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:53:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:53:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:53:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:53:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:53:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:53:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:53:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:53:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:53:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:53:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:53:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:53:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:53:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:53:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:53:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:53:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:53:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:53:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:53:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:53:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:53:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:53:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:53:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:53:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:53:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:53:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:53:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:53:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:53:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:53:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:53:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:53:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:53:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:53:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:53:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:53:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:53:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:53:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:53:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:53:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:53:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:53:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:53:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:53:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:53:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:53:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:53:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:53:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:53:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:53:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:53:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:53:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:53:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:53:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:53:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:53:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:53:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:53:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:53:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:53:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:53:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:53:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:53:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:53:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:53:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:53:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:53:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:53:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:53:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:53:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:53:08,286 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:53:08,286 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:53:08,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:53:08 BoogieIcfgContainer [2020-09-24 16:53:08,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:53:08,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:53:08,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:53:08,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:53:08,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:53:06" (1/3) ... [2020-09-24 16:53:08,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af8944d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:53:08, skipping insertion in model container [2020-09-24 16:53:08,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:06" (2/3) ... [2020-09-24 16:53:08,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af8944d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:53:08, skipping insertion in model container [2020-09-24 16:53:08,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:53:08" (3/3) ... [2020-09-24 16:53:08,304 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product06.cil.c [2020-09-24 16:53:08,316 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:53:08,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:53:08,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:53:08,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:53:08,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:53:08,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:53:08,378 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:53:08,378 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:53:08,379 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:53:08,379 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:53:08,379 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:53:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states. [2020-09-24 16:53:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:53:08,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:53:08,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:53:08,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:53:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:53:08,430 INFO L82 PathProgramCache]: Analyzing trace with hash -662698620, now seen corresponding path program 1 times [2020-09-24 16:53:08,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:53:08,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061778524] [2020-09-24 16:53:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:53:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:09,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:23,416 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:23,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:53:23,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:53:23,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14592 [2020-09-24 16:53:23,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:53:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 16:53:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 16:53:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:53:23,905 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:53:23,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:53:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:24,209 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:24,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:53:24,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-24 16:53:24,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 16:53:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:24,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:53:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:24,273 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:24,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:24,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:24,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:24,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:24,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:53:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:24,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:24,282 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:24,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:24,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:24,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:24,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:24,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:53:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:24,295 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:24,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:24,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:53:24,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:24,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:53:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:24,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:24,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:24,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:24,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:24,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:53:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:24,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:24,319 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:24,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:24,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:53:24,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:53:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:24,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:24,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:53:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:24,351 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:24,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:24,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:24,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:24,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:24,389 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 16:53:24,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061778524] [2020-09-24 16:53:24,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:53:24,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:53:24,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361025139] [2020-09-24 16:53:24,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:53:24,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:53:24,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:53:24,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:53:24,428 INFO L87 Difference]: Start difference. First operand 273 states. Second operand 8 states. [2020-09-24 16:53:25,054 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:53:26,206 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:26,622 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:53:27,093 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:27,535 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:53:27,900 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:53:28,283 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:28,632 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:30,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:53:30,276 INFO L93 Difference]: Finished difference Result 530 states and 655 transitions. [2020-09-24 16:53:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:53:30,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 16:53:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:53:30,319 INFO L225 Difference]: With dead ends: 530 [2020-09-24 16:53:30,319 INFO L226 Difference]: Without dead ends: 368 [2020-09-24 16:53:30,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:53:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-09-24 16:53:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 326. [2020-09-24 16:53:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-09-24 16:53:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 366 transitions. [2020-09-24 16:53:30,475 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 366 transitions. Word has length 142 [2020-09-24 16:53:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:53:30,476 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 366 transitions. [2020-09-24 16:53:30,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:53:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 366 transitions. [2020-09-24 16:53:30,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 16:53:30,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:53:30,483 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 16:53:30,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:53:30,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:53:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:53:30,484 INFO L82 PathProgramCache]: Analyzing trace with hash 604809301, now seen corresponding path program 1 times [2020-09-24 16:53:30,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:53:30,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003398960] [2020-09-24 16:53:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:53:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:30,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:31,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:36,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:39,302 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:39,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 16:53:39,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 16:53:39,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8729 [2020-09-24 16:53:39,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:53:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 16:53:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 16:53:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:39,687 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:53:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:53:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:39,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:39,922 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:39,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:53:39,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-24 16:53:39,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 16:53:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:53:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:39,970 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:39,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:39,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:39,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:39,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:53:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:39,977 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:39,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:39,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:39,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:53:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:39,991 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:39,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:39,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:39,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:53:39,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:39,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:53:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:40,000 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:40,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:40,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:40,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:40,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 16:53:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:40,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:40,024 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:40,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:53:40,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:53:40,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:53:40,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:40,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 16:53:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:40,033 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:40,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:40,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:40,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 16:53:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:40,040 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:40,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:40,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:40,087 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 16:53:40,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003398960] [2020-09-24 16:53:40,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:53:40,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:53:40,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759656055] [2020-09-24 16:53:40,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:53:40,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:53:40,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:53:40,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:53:40,092 INFO L87 Difference]: Start difference. First operand 326 states and 366 transitions. Second operand 5 states. [2020-09-24 16:53:40,693 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:53:41,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:53:41,922 INFO L93 Difference]: Finished difference Result 591 states and 717 transitions. [2020-09-24 16:53:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:53:41,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 16:53:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:53:41,933 INFO L225 Difference]: With dead ends: 591 [2020-09-24 16:53:41,933 INFO L226 Difference]: Without dead ends: 375 [2020-09-24 16:53:41,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:53:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-09-24 16:53:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 324. [2020-09-24 16:53:41,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-09-24 16:53:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 360 transitions. [2020-09-24 16:53:41,997 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 360 transitions. Word has length 148 [2020-09-24 16:53:41,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:53:41,998 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 360 transitions. [2020-09-24 16:53:41,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:53:41,998 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 360 transitions. [2020-09-24 16:53:42,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 16:53:42,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:53:42,002 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] [2020-09-24 16:53:42,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:53:42,002 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:53:42,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:53:42,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1031624844, now seen corresponding path program 1 times [2020-09-24 16:53:42,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:53:42,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965442963] [2020-09-24 16:53:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:53:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:42,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:47,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking...