/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:48:44,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:48:44,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:48:44,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:48:44,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:48:44,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:48:44,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:48:44,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:48:44,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:48:44,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:48:44,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:48:44,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:48:44,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:48:44,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:48:44,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:48:44,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:48:44,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:48:44,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:48:44,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:48:44,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:48:44,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:48:44,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:48:44,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:48:44,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:48:44,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:48:44,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:48:44,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:48:44,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:48:44,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:48:44,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:48:44,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:48:44,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:48:44,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:48:44,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:48:44,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:48:44,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:48:44,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:48:44,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:48:44,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:48:44,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:48:44,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:48:44,639 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 [2020-08-22 02:48:44,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:48:44,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:48:44,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:48:44,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:48:44,684 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:48:44,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:48:44,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:48:44,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:48:44,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:48:44,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:48:44,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:48:44,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:48:44,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:48:44,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:48:44,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:48:44,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:48:44,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:48:44,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:48:44,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:48:44,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:48:44,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:48:44,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:48:44,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:48:44,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:48:44,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:48:44,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:48:44,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:48:44,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:48:44,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:48:44,690 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:48:45,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:48:45,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:48:45,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:48:45,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:48:45,053 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:48:45,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-22 02:48:45,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b13010c53/8f975f7a64f04fce879795fc3f4cbb8c/FLAGe83a67491 [2020-08-22 02:48:45,656 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:48:45,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-22 02:48:45,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b13010c53/8f975f7a64f04fce879795fc3f4cbb8c/FLAGe83a67491 [2020-08-22 02:48:45,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b13010c53/8f975f7a64f04fce879795fc3f4cbb8c [2020-08-22 02:48:45,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:48:45,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:48:45,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:48:45,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:48:45,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:48:45,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:48:45" (1/1) ... [2020-08-22 02:48:45,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:45, skipping insertion in model container [2020-08-22 02:48:45,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:48:45" (1/1) ... [2020-08-22 02:48:45,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:48:46,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:48:46,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:48:46,432 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:48:46,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:48:46,645 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:48:46,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46 WrapperNode [2020-08-22 02:48:46,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:48:46,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:48:46,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:48:46,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:48:46,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46" (1/1) ... [2020-08-22 02:48:46,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46" (1/1) ... [2020-08-22 02:48:46,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46" (1/1) ... [2020-08-22 02:48:46,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46" (1/1) ... [2020-08-22 02:48:46,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46" (1/1) ... [2020-08-22 02:48:46,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46" (1/1) ... [2020-08-22 02:48:46,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46" (1/1) ... [2020-08-22 02:48:46,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:48:46,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:48:46,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:48:46,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:48:46,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46" (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 [2020-08-22 02:48:46,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:48:46,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:48:46,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:48:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:48:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:48:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:48:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:48:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:48:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:48:46,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:48:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:48:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:48:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:48:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:48:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:48:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:48:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:48:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:48:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:48:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 02:48:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:48:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:48:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:48:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:48:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:48:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:48:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:48:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:48:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:48:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:48:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:48:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:48:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:48:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:48:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:48:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:48:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:48:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:48:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:48:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:48:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:48:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:48:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:48:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:48:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:48:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:48:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:48:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:48:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:48:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:48:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:48:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:48:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:48:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:48:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:48:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:48:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:48:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:48:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:48:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:48:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:48:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:48:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:48:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:48:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:48:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:48:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:48:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:48:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:48:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:48:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:48:46,827 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:48:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:48:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:48:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:48:46,830 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:48:46,830 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:48:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:48:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:48:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:48:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:48:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:48:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:48:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:48:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:48:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:48:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:48:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:48:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:48:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 02:48:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:48:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:48:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:48:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:48:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:48:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:48:47,828 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:48:47,828 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:48:47,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:48:47 BoogieIcfgContainer [2020-08-22 02:48:47,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:48:47,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:48:47,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:48:47,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:48:47,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:48:45" (1/3) ... [2020-08-22 02:48:47,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69587739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:48:47, skipping insertion in model container [2020-08-22 02:48:47,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:46" (2/3) ... [2020-08-22 02:48:47,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69587739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:48:47, skipping insertion in model container [2020-08-22 02:48:47,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:48:47" (3/3) ... [2020-08-22 02:48:47,842 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-08-22 02:48:47,853 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:48:47,861 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:48:47,875 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:48:47,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:48:47,901 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:48:47,901 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:48:47,901 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:48:47,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:48:47,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:48:47,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:48:47,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:48:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-22 02:48:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:48:47,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:47,937 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] [2020-08-22 02:48:47,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:47,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times [2020-08-22 02:48:47,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:47,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78631746] [2020-08-22 02:48:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:48,622 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:48,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:48,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:48:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:48,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:48:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:48,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78631746] [2020-08-22 02:48:48,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:48,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:48:48,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982491781] [2020-08-22 02:48:48,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:48:48,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:48,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:48:48,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:48:48,758 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-22 02:48:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:50,029 INFO L93 Difference]: Finished difference Result 329 states and 431 transitions. [2020-08-22 02:48:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:48:50,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:48:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:50,048 INFO L225 Difference]: With dead ends: 329 [2020-08-22 02:48:50,048 INFO L226 Difference]: Without dead ends: 177 [2020-08-22 02:48:50,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:48:50,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-22 02:48:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-22 02:48:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-22 02:48:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2020-08-22 02:48:50,147 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46 [2020-08-22 02:48:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:50,165 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2020-08-22 02:48:50,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:48:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2020-08-22 02:48:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:48:50,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:50,172 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] [2020-08-22 02:48:50,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:48:50,173 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:50,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:50,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times [2020-08-22 02:48:50,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:50,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789850289] [2020-08-22 02:48:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:50,526 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:50,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:50,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:50,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:50,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:48:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:50,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:48:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:50,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789850289] [2020-08-22 02:48:50,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:50,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:48:50,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825742472] [2020-08-22 02:48:50,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:48:50,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:50,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:48:50,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:48:50,574 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 4 states. [2020-08-22 02:48:50,976 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:51,904 INFO L93 Difference]: Finished difference Result 262 states and 322 transitions. [2020-08-22 02:48:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:48:51,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:48:51,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:51,909 INFO L225 Difference]: With dead ends: 262 [2020-08-22 02:48:51,909 INFO L226 Difference]: Without dead ends: 161 [2020-08-22 02:48:51,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:48:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-22 02:48:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-22 02:48:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-22 02:48:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-22 02:48:51,954 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 47 [2020-08-22 02:48:51,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:51,954 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-22 02:48:51,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:48:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-22 02:48:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:48:51,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:51,957 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] [2020-08-22 02:48:51,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:48:51,957 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:51,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:51,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1316795497, now seen corresponding path program 1 times [2020-08-22 02:48:51,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:51,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215104700] [2020-08-22 02:48:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,234 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:48:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:48:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:52,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215104700] [2020-08-22 02:48:52,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:52,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:48:52,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842223557] [2020-08-22 02:48:52,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:48:52,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:52,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:48:52,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:48:52,309 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 8 states. [2020-08-22 02:48:52,657 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:52,988 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:53,252 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:53,484 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:54,854 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2020-08-22 02:48:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 02:48:54,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 02:48:54,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:54,863 INFO L225 Difference]: With dead ends: 271 [2020-08-22 02:48:54,863 INFO L226 Difference]: Without dead ends: 161 [2020-08-22 02:48:54,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:48:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-22 02:48:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-22 02:48:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-22 02:48:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-08-22 02:48:54,948 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 51 [2020-08-22 02:48:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:54,949 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-08-22 02:48:54,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:48:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-08-22 02:48:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-22 02:48:54,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:54,961 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] [2020-08-22 02:48:54,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:48:54,961 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times [2020-08-22 02:48:54,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:54,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438796] [2020-08-22 02:48:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,301 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:48:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:48:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:48:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:55,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438796] [2020-08-22 02:48:55,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:55,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:48:55,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367375983] [2020-08-22 02:48:55,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:48:55,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:55,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:48:55,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:48:55,397 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand 6 states. [2020-08-22 02:48:55,716 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:56,915 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:57,710 INFO L93 Difference]: Finished difference Result 369 states and 459 transitions. [2020-08-22 02:48:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:48:57,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-22 02:48:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:57,715 INFO L225 Difference]: With dead ends: 369 [2020-08-22 02:48:57,715 INFO L226 Difference]: Without dead ends: 259 [2020-08-22 02:48:57,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:48:57,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-22 02:48:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 218. [2020-08-22 02:48:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-22 02:48:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 248 transitions. [2020-08-22 02:48:57,764 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 248 transitions. Word has length 69 [2020-08-22 02:48:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:57,764 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 248 transitions. [2020-08-22 02:48:57,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:48:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 248 transitions. [2020-08-22 02:48:57,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 02:48:57,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:57,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:57,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:48:57,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:57,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:57,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1727174811, now seen corresponding path program 1 times [2020-08-22 02:48:57,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:57,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357255095] [2020-08-22 02:48:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,113 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:48:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:48:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 02:48:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 02:48:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:58,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357255095] [2020-08-22 02:48:58,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:58,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:48:58,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620549174] [2020-08-22 02:48:58,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:48:58,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:58,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:48:58,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:48:58,270 INFO L87 Difference]: Start difference. First operand 218 states and 248 transitions. Second operand 8 states. [2020-08-22 02:48:58,580 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:59,783 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:00,062 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:00,311 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:00,552 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:00,866 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:02,033 INFO L93 Difference]: Finished difference Result 649 states and 794 transitions. [2020-08-22 02:49:02,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:49:02,034 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-22 02:49:02,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:02,038 INFO L225 Difference]: With dead ends: 649 [2020-08-22 02:49:02,039 INFO L226 Difference]: Without dead ends: 455 [2020-08-22 02:49:02,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:49:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-08-22 02:49:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 391. [2020-08-22 02:49:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-22 02:49:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 446 transitions. [2020-08-22 02:49:02,127 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 446 transitions. Word has length 83 [2020-08-22 02:49:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:02,128 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 446 transitions. [2020-08-22 02:49:02,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:49:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 446 transitions. [2020-08-22 02:49:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 02:49:02,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:02,130 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] [2020-08-22 02:49:02,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:49:02,130 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1108418135, now seen corresponding path program 1 times [2020-08-22 02:49:02,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:02,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660177579] [2020-08-22 02:49:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,457 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:02,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:49:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 02:49:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 02:49:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:02,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660177579] [2020-08-22 02:49:02,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:02,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:49:02,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044446659] [2020-08-22 02:49:02,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:49:02,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:02,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:49:02,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:49:02,610 INFO L87 Difference]: Start difference. First operand 391 states and 446 transitions. Second operand 9 states. [2020-08-22 02:49:03,014 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:04,094 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:04,353 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:04,624 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:04,875 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:05,114 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:06,202 INFO L93 Difference]: Finished difference Result 494 states and 614 transitions. [2020-08-22 02:49:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:49:06,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-22 02:49:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:06,207 INFO L225 Difference]: With dead ends: 494 [2020-08-22 02:49:06,207 INFO L226 Difference]: Without dead ends: 491 [2020-08-22 02:49:06,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:49:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-22 02:49:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-22 02:49:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-22 02:49:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 445 transitions. [2020-08-22 02:49:06,304 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 445 transitions. Word has length 87 [2020-08-22 02:49:06,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:06,305 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 445 transitions. [2020-08-22 02:49:06,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:49:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 445 transitions. [2020-08-22 02:49:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:49:06,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:06,307 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] [2020-08-22 02:49:06,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:49:06,307 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:06,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:06,308 INFO L82 PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times [2020-08-22 02:49:06,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:06,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316509967] [2020-08-22 02:49:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,534 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:49:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:49:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:49:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:06,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316509967] [2020-08-22 02:49:06,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:06,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:49:06,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846716985] [2020-08-22 02:49:06,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:49:06,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:06,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:49:06,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:49:06,661 INFO L87 Difference]: Start difference. First operand 391 states and 445 transitions. Second operand 9 states. [2020-08-22 02:49:07,459 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:07,736 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:49:07,970 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:08,211 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:09,315 INFO L93 Difference]: Finished difference Result 862 states and 1052 transitions. [2020-08-22 02:49:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:49:09,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-22 02:49:09,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:09,320 INFO L225 Difference]: With dead ends: 862 [2020-08-22 02:49:09,321 INFO L226 Difference]: Without dead ends: 495 [2020-08-22 02:49:09,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:49:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-22 02:49:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 401. [2020-08-22 02:49:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-08-22 02:49:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 455 transitions. [2020-08-22 02:49:09,422 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 455 transitions. Word has length 88 [2020-08-22 02:49:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:09,423 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 455 transitions. [2020-08-22 02:49:09,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:49:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 455 transitions. [2020-08-22 02:49:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:49:09,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:09,426 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] [2020-08-22 02:49:09,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:49:09,427 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:09,427 INFO L82 PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times [2020-08-22 02:49:09,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:09,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95059555] [2020-08-22 02:49:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,723 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:09,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:49:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:49:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:49:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:09,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95059555] [2020-08-22 02:49:09,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:09,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:49:09,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530218304] [2020-08-22 02:49:09,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:49:09,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:09,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:49:09,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:49:09,887 INFO L87 Difference]: Start difference. First operand 401 states and 455 transitions. Second operand 11 states. [2020-08-22 02:49:10,344 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:10,594 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:10,816 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:11,397 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:11,674 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:11,906 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:13,107 INFO L93 Difference]: Finished difference Result 886 states and 1094 transitions. [2020-08-22 02:49:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:49:13,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-22 02:49:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:13,116 INFO L225 Difference]: With dead ends: 886 [2020-08-22 02:49:13,116 INFO L226 Difference]: Without dead ends: 509 [2020-08-22 02:49:13,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:49:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-22 02:49:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 409. [2020-08-22 02:49:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-08-22 02:49:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 463 transitions. [2020-08-22 02:49:13,197 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 463 transitions. Word has length 88 [2020-08-22 02:49:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:13,198 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 463 transitions. [2020-08-22 02:49:13,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:49:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 463 transitions. [2020-08-22 02:49:13,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:49:13,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:13,199 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] [2020-08-22 02:49:13,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:49:13,200 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:13,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:13,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times [2020-08-22 02:49:13,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:13,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812554996] [2020-08-22 02:49:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,500 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:13,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:49:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:49:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:49:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:13,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812554996] [2020-08-22 02:49:13,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:13,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:49:13,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569489394] [2020-08-22 02:49:13,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:49:13,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:13,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:49:13,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:49:13,725 INFO L87 Difference]: Start difference. First operand 409 states and 463 transitions. Second operand 7 states. [2020-08-22 02:49:14,143 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:14,597 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:16,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:16,749 INFO L93 Difference]: Finished difference Result 1209 states and 1542 transitions. [2020-08-22 02:49:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 02:49:16,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-22 02:49:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:16,755 INFO L225 Difference]: With dead ends: 1209 [2020-08-22 02:49:16,755 INFO L226 Difference]: Without dead ends: 824 [2020-08-22 02:49:16,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:49:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-22 02:49:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 725. [2020-08-22 02:49:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2020-08-22 02:49:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 857 transitions. [2020-08-22 02:49:16,888 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 857 transitions. Word has length 88 [2020-08-22 02:49:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:16,890 INFO L479 AbstractCegarLoop]: Abstraction has 725 states and 857 transitions. [2020-08-22 02:49:16,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:49:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 857 transitions. [2020-08-22 02:49:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 02:49:16,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:16,892 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] [2020-08-22 02:49:16,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:49:16,893 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:16,893 INFO L82 PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times [2020-08-22 02:49:16,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:16,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935055686] [2020-08-22 02:49:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:49:16,959 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:49:16,960 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:49:16,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:49:16,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:49:16 BoogieIcfgContainer [2020-08-22 02:49:17,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:49:17,006 INFO L168 Benchmark]: Toolchain (without parser) took 31030.05 ms. Allocated memory was 141.0 MB in the beginning and 642.8 MB in the end (delta: 501.7 MB). Free memory was 103.4 MB in the beginning and 329.9 MB in the end (delta: -226.5 MB). Peak memory consumption was 275.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:17,012 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:49:17,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.44 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 172.4 MB in the end (delta: -69.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:17,016 INFO L168 Benchmark]: Boogie Preprocessor took 94.08 ms. Allocated memory is still 203.9 MB. Free memory was 172.4 MB in the beginning and 168.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:17,016 INFO L168 Benchmark]: RCFGBuilder took 1093.12 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.3 MB in the beginning and 192.5 MB in the end (delta: -24.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:17,017 INFO L168 Benchmark]: TraceAbstraction took 29164.67 ms. Allocated memory was 235.9 MB in the beginning and 642.8 MB in the end (delta: 406.8 MB). Free memory was 191.1 MB in the beginning and 329.9 MB in the end (delta: -138.8 MB). Peak memory consumption was 268.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:17,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.44 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 172.4 MB in the end (delta: -69.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.08 ms. Allocated memory is still 203.9 MB. Free memory was 172.4 MB in the beginning and 168.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1093.12 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.3 MB in the beginning and 192.5 MB in the end (delta: -24.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29164.67 ms. Allocated memory was 235.9 MB in the beginning and 642.8 MB in the end (delta: 406.8 MB). Free memory was 191.1 MB in the beginning and 329.9 MB in the end (delta: -138.8 MB). Peak memory consumption was 268.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L554] int pumpRunning = 0; [L555] int systemActive = 1; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; [L525] int retValue_acc ; [L526] int tmp ; [L530] FCALL select_helpers() [L531] FCALL select_features() [L532] CALL, EXPR valid_product() [L868] int retValue_acc ; [L871] retValue_acc = 1 [L872] return (retValue_acc); [L532] RET, EXPR valid_product() [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) [L536] FCALL setup() [L537] CALL runTest() [L516] CALL test() [L778] int splverifierCounter ; [L779] int tmp ; [L780] int tmp___0 ; [L781] int tmp___1 ; [L782] int tmp___2 ; [L785] splverifierCounter = 0 [L787] COND TRUE 1 [L789] COND TRUE splverifierCounter < 4 [L795] tmp = __VERIFIER_nondet_int() [L797] COND TRUE \read(tmp) [L799] CALL waterRise() [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 [L799] RET waterRise() [L805] tmp___0 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___0) [L809] CALL changeMethaneLevel() [L908] COND FALSE !(\read(methaneLevelCritical)) [L911] methaneLevelCritical = 1 [L809] RET changeMethaneLevel() [L815] tmp___2 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___2) [L830] CALL timeShift() [L561] COND FALSE !(\read(pumpRunning)) [L568] COND TRUE \read(systemActive) [L570] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__lowWaterSensor() [L616] int tmp ; [L619] COND FALSE !(\read(pumpRunning)) [L634] CALL processEnvironment__wrappee__highWaterSensor() [L590] int tmp ; [L593] COND TRUE ! pumpRunning [L595] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L958] int retValue_acc ; [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L595] RET, EXPR isHighWaterLevel() [L595] tmp = isHighWaterLevel() [L597] COND TRUE \read(tmp) [L599] CALL activatePump() [L670] pumpRunning = 1 [L599] RET activatePump() [L634] RET processEnvironment__wrappee__highWaterSensor() [L660] RET processEnvironment__wrappee__lowWaterSensor() [L570] RET processEnvironment() [L576] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 23.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1165 SDtfs, 2093 SDslu, 1026 SDs, 0 SdLazy, 5356 SolverSat, 1310 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=725occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 586 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 200772 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...