/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -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 0.1.25-5644d1e-m [2020-08-19 06:35:01,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:35:01,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:35:01,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:35:01,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:35:01,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:35:01,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:35:01,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:35:01,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:35:01,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:35:01,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:35:01,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:35:01,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:35:01,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:35:01,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:35:01,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:35:01,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:35:01,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:35:01,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:35:01,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:35:01,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:35:01,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:35:01,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:35:01,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:35:01,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:35:01,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:35:01,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:35:01,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:35:01,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:35:01,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:35:01,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:35:01,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:35:01,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:35:01,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:35:01,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:35:01,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:35:01,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:35:01,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:35:01,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:35:01,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:35:01,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:35:01,182 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 [2020-08-19 06:35:01,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:35:01,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:35:01,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:35:01,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:35:01,228 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:35:01,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:35:01,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:35:01,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:35:01,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:35:01,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:35:01,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:35:01,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:35:01,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:35:01,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:35:01,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:35:01,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:35:01,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:35:01,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:35:01,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:35:01,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:35:01,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:35:01,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:35:01,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:35:01,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:35:01,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:35:01,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:35:01,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:35:01,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:35:01,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:35:01,235 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:35:01,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:35:01,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:35:01,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:35:01,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:35:01,576 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:35:01,577 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-19 06:35:01,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44198ae60/20bd6a97fa3c4a7fb9cd98d57ea4680c/FLAG1daf8300d [2020-08-19 06:35:02,188 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:35:02,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-19 06:35:02,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44198ae60/20bd6a97fa3c4a7fb9cd98d57ea4680c/FLAG1daf8300d [2020-08-19 06:35:02,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44198ae60/20bd6a97fa3c4a7fb9cd98d57ea4680c [2020-08-19 06:35:02,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:35:02,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:35:02,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:35:02,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:35:02,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:35:02,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:35:02" (1/1) ... [2020-08-19 06:35:02,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73af11df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:02, skipping insertion in model container [2020-08-19 06:35:02,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:35:02" (1/1) ... [2020-08-19 06:35:02,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:35:02,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:35:03,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:35:03,040 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:35:03,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:35:03,197 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:35:03,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03 WrapperNode [2020-08-19 06:35:03,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:35:03,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:35:03,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:35:03,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:35:03,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03" (1/1) ... [2020-08-19 06:35:03,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03" (1/1) ... [2020-08-19 06:35:03,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03" (1/1) ... [2020-08-19 06:35:03,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03" (1/1) ... [2020-08-19 06:35:03,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03" (1/1) ... [2020-08-19 06:35:03,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03" (1/1) ... [2020-08-19 06:35:03,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03" (1/1) ... [2020-08-19 06:35:03,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:35:03,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:35:03,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:35:03,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:35:03,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03" (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 [2020-08-19 06:35:03,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:35:03,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:35:03,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:35:03,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 06:35:03,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:35:03,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:35:03,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:35:03,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:35:03,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:35:03,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:35:03,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:35:03,367 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:35:03,367 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:35:03,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:35:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:35:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:35:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:35:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:35:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:35:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 06:35:03,369 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:35:03,369 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:35:03,369 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:35:03,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:35:03,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:35:03,369 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:35:03,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:35:03,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 06:35:03,370 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:35:03,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:35:03,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:35:03,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:35:03,370 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:35:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:35:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:35:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:35:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:35:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:35:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:35:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:35:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 06:35:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:35:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:35:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:35:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:35:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:35:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:35:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 06:35:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:35:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:35:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:35:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:35:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:35:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:35:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:35:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:35:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:35:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:35:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:35:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:35:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:35:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:35:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:35:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:35:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:35:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:35:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:35:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:35:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:35:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:35:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:35:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:35:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:35:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:35:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:35:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:35:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:35:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:35:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:35:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:35:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:35:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 06:35:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:35:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:35:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:35:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:35:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:35:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:35:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 06:35:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 06:35:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:35:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:35:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:35:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:35:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:35:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:35:04,548 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:35:04,548 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:35:04,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:35:04 BoogieIcfgContainer [2020-08-19 06:35:04,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:35:04,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:35:04,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:35:04,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:35:04,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:35:02" (1/3) ... [2020-08-19 06:35:04,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ea60e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:35:04, skipping insertion in model container [2020-08-19 06:35:04,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:35:03" (2/3) ... [2020-08-19 06:35:04,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ea60e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:35:04, skipping insertion in model container [2020-08-19 06:35:04,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:35:04" (3/3) ... [2020-08-19 06:35:04,562 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-08-19 06:35:04,573 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:35:04,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:35:04,596 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:35:04,622 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:35:04,623 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:35:04,623 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:35:04,623 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:35:04,623 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:35:04,624 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:35:04,624 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:35:04,624 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:35:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-19 06:35:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 06:35:04,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:04,664 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] [2020-08-19 06:35:04,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:04,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:04,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times [2020-08-19 06:35:04,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:04,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145145004] [2020-08-19 06:35:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:05,371 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:35:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:35:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:35:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:35:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:35:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:35:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:35:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:05,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:35:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:05,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:35:05,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145145004] [2020-08-19 06:35:05,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:35:05,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:35:05,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349370585] [2020-08-19 06:35:05,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:35:05,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:35:05,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:35:05,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:35:05,481 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-19 06:35:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:06,764 INFO L93 Difference]: Finished difference Result 329 states and 431 transitions. [2020-08-19 06:35:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:35:06,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 06:35:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:06,786 INFO L225 Difference]: With dead ends: 329 [2020-08-19 06:35:06,787 INFO L226 Difference]: Without dead ends: 177 [2020-08-19 06:35:06,793 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 [2020-08-19 06:35:06,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-19 06:35:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-19 06:35:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-19 06:35:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2020-08-19 06:35:06,977 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46 [2020-08-19 06:35:06,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:06,979 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2020-08-19 06:35:06,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:35:06,979 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2020-08-19 06:35:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 06:35:06,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:06,991 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] [2020-08-19 06:35:06,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:35:06,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:06,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times [2020-08-19 06:35:06,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:06,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720391716] [2020-08-19 06:35:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:07,304 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:35:07,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:35:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:07,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:35:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:07,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:35:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:35:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:07,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:35:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:07,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:35:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:35:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:35:07,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720391716] [2020-08-19 06:35:07,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:35:07,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:35:07,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16341739] [2020-08-19 06:35:07,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:35:07,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:35:07,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:35:07,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:35:07,347 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 4 states. [2020-08-19 06:35:07,789 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:08,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:08,738 INFO L93 Difference]: Finished difference Result 262 states and 322 transitions. [2020-08-19 06:35:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:35:08,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 06:35:08,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:08,741 INFO L225 Difference]: With dead ends: 262 [2020-08-19 06:35:08,741 INFO L226 Difference]: Without dead ends: 161 [2020-08-19 06:35:08,743 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 [2020-08-19 06:35:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-19 06:35:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-19 06:35:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-19 06:35:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-19 06:35:08,783 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 47 [2020-08-19 06:35:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:08,784 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-19 06:35:08,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:35:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-19 06:35:08,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 06:35:08,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:08,786 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] [2020-08-19 06:35:08,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:35:08,787 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:08,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:08,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1316795497, now seen corresponding path program 1 times [2020-08-19 06:35:08,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:08,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784096172] [2020-08-19 06:35:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:09,102 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:35:09,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:35:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:09,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:35:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:09,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:35:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:09,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:35:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:35:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:35:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:35:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:35:09,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784096172] [2020-08-19 06:35:09,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:35:09,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:35:09,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381584111] [2020-08-19 06:35:09,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:35:09,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:35:09,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:35:09,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:35:09,177 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 8 states. [2020-08-19 06:35:09,544 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:35:09,865 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:10,118 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:10,370 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:11,815 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2020-08-19 06:35:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:35:11,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 06:35:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:11,820 INFO L225 Difference]: With dead ends: 271 [2020-08-19 06:35:11,820 INFO L226 Difference]: Without dead ends: 161 [2020-08-19 06:35:11,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:35:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-19 06:35:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-19 06:35:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-19 06:35:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-08-19 06:35:11,884 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 51 [2020-08-19 06:35:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:11,886 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-08-19 06:35:11,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:35:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-08-19 06:35:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 06:35:11,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:11,891 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] [2020-08-19 06:35:11,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:35:11,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:11,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:11,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times [2020-08-19 06:35:11,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:11,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419541008] [2020-08-19 06:35:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,233 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:35:12,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:35:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:35:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:35:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:35:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:35:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:35:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 06:35:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 06:35:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:35:12,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419541008] [2020-08-19 06:35:12,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:35:12,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:35:12,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113621187] [2020-08-19 06:35:12,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:35:12,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:35:12,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:35:12,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:35:12,322 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand 6 states. [2020-08-19 06:35:12,625 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:35:13,805 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:14,600 INFO L93 Difference]: Finished difference Result 369 states and 459 transitions. [2020-08-19 06:35:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:35:14,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-19 06:35:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:14,604 INFO L225 Difference]: With dead ends: 369 [2020-08-19 06:35:14,604 INFO L226 Difference]: Without dead ends: 259 [2020-08-19 06:35:14,608 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 [2020-08-19 06:35:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-19 06:35:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 218. [2020-08-19 06:35:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-19 06:35:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 248 transitions. [2020-08-19 06:35:14,656 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 248 transitions. Word has length 69 [2020-08-19 06:35:14,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:14,656 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 248 transitions. [2020-08-19 06:35:14,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:35:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 248 transitions. [2020-08-19 06:35:14,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 06:35:14,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:14,658 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] [2020-08-19 06:35:14,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:35:14,659 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:14,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1727174811, now seen corresponding path program 1 times [2020-08-19 06:35:14,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:14,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785698273] [2020-08-19 06:35:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:14,941 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:35:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:35:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:35:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:35:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:35:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:35:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:35:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:35:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:35:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:35:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:35:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:35:15,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785698273] [2020-08-19 06:35:15,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:35:15,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:35:15,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663827390] [2020-08-19 06:35:15,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:35:15,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:35:15,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:35:15,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:35:15,086 INFO L87 Difference]: Start difference. First operand 218 states and 248 transitions. Second operand 8 states. [2020-08-19 06:35:15,424 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:35:16,643 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:16,917 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:17,183 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:17,428 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:35:17,711 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:18,892 INFO L93 Difference]: Finished difference Result 649 states and 794 transitions. [2020-08-19 06:35:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:35:18,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-19 06:35:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:18,900 INFO L225 Difference]: With dead ends: 649 [2020-08-19 06:35:18,900 INFO L226 Difference]: Without dead ends: 455 [2020-08-19 06:35:18,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:35:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-08-19 06:35:18,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 391. [2020-08-19 06:35:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-19 06:35:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 446 transitions. [2020-08-19 06:35:18,993 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 446 transitions. Word has length 83 [2020-08-19 06:35:18,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:18,994 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 446 transitions. [2020-08-19 06:35:18,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:35:18,994 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 446 transitions. [2020-08-19 06:35:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 06:35:18,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:18,996 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] [2020-08-19 06:35:18,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:35:18,996 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:18,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1108418135, now seen corresponding path program 1 times [2020-08-19 06:35:18,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:18,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633864146] [2020-08-19 06:35:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,269 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:35:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:35:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:35:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:35:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:35:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:35:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:35:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:35:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:35:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:35:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 06:35:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 06:35:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:35:19,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633864146] [2020-08-19 06:35:19,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:35:19,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:35:19,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411053846] [2020-08-19 06:35:19,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:35:19,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:35:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:35:19,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:35:19,438 INFO L87 Difference]: Start difference. First operand 391 states and 446 transitions. Second operand 9 states. [2020-08-19 06:35:19,799 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:35:20,922 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:21,138 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:35:21,397 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:21,662 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:21,912 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:23,015 INFO L93 Difference]: Finished difference Result 494 states and 614 transitions. [2020-08-19 06:35:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:35:23,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-19 06:35:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:23,027 INFO L225 Difference]: With dead ends: 494 [2020-08-19 06:35:23,027 INFO L226 Difference]: Without dead ends: 491 [2020-08-19 06:35:23,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 06:35:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-19 06:35:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-19 06:35:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-19 06:35:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 445 transitions. [2020-08-19 06:35:23,156 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 445 transitions. Word has length 87 [2020-08-19 06:35:23,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:23,156 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 445 transitions. [2020-08-19 06:35:23,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:35:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 445 transitions. [2020-08-19 06:35:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 06:35:23,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:23,159 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] [2020-08-19 06:35:23,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:35:23,159 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:23,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:23,160 INFO L82 PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times [2020-08-19 06:35:23,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:23,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144723005] [2020-08-19 06:35:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,396 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:35:23,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:35:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:35:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:35:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:35:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:35:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:35:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:35:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:35:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:35:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 06:35:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:35:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:35:23,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144723005] [2020-08-19 06:35:23,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:35:23,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:35:23,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480375003] [2020-08-19 06:35:23,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:35:23,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:35:23,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:35:23,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:35:23,528 INFO L87 Difference]: Start difference. First operand 391 states and 445 transitions. Second operand 9 states. [2020-08-19 06:35:24,356 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:35:24,598 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:35:24,833 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:25,058 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:26,146 INFO L93 Difference]: Finished difference Result 862 states and 1052 transitions. [2020-08-19 06:35:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:35:26,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 06:35:26,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:26,151 INFO L225 Difference]: With dead ends: 862 [2020-08-19 06:35:26,151 INFO L226 Difference]: Without dead ends: 495 [2020-08-19 06:35:26,153 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 [2020-08-19 06:35:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-19 06:35:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 401. [2020-08-19 06:35:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-08-19 06:35:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 455 transitions. [2020-08-19 06:35:26,230 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 455 transitions. Word has length 88 [2020-08-19 06:35:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:26,231 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 455 transitions. [2020-08-19 06:35:26,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:35:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 455 transitions. [2020-08-19 06:35:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 06:35:26,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:26,232 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] [2020-08-19 06:35:26,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:35:26,233 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:26,233 INFO L82 PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times [2020-08-19 06:35:26,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:26,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751259965] [2020-08-19 06:35:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,479 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:35:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:35:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:35:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:35:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:35:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:35:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:35:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:35:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:35:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:35:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 06:35:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:35:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:35:26,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751259965] [2020-08-19 06:35:26,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:35:26,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:35:26,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878203457] [2020-08-19 06:35:26,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:35:26,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:35:26,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:35:26,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:35:26,660 INFO L87 Difference]: Start difference. First operand 401 states and 455 transitions. Second operand 11 states. [2020-08-19 06:35:27,162 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:27,511 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:27,882 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:28,568 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:28,829 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:29,073 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:30,309 INFO L93 Difference]: Finished difference Result 886 states and 1094 transitions. [2020-08-19 06:35:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:35:30,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-19 06:35:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:30,317 INFO L225 Difference]: With dead ends: 886 [2020-08-19 06:35:30,317 INFO L226 Difference]: Without dead ends: 509 [2020-08-19 06:35:30,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:35:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-19 06:35:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 409. [2020-08-19 06:35:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-08-19 06:35:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 463 transitions. [2020-08-19 06:35:30,399 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 463 transitions. Word has length 88 [2020-08-19 06:35:30,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:30,400 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 463 transitions. [2020-08-19 06:35:30,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:35:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 463 transitions. [2020-08-19 06:35:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 06:35:30,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:30,405 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] [2020-08-19 06:35:30,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:35:30,405 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:30,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times [2020-08-19 06:35:30,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:30,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246066522] [2020-08-19 06:35:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,669 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:35:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:35:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:35:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:35:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:35:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:35:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:35:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:35:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:35:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:35:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:35:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 06:35:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:35:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:35:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:35:30,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246066522] [2020-08-19 06:35:30,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:35:30,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 06:35:30,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371166928] [2020-08-19 06:35:30,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:35:30,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:35:30,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:35:30,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:35:30,859 INFO L87 Difference]: Start difference. First operand 409 states and 463 transitions. Second operand 7 states. [2020-08-19 06:35:31,208 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:35:31,652 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:35:33,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:33,984 INFO L93 Difference]: Finished difference Result 1209 states and 1542 transitions. [2020-08-19 06:35:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:35:33,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-19 06:35:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:33,991 INFO L225 Difference]: With dead ends: 1209 [2020-08-19 06:35:33,991 INFO L226 Difference]: Without dead ends: 824 [2020-08-19 06:35:33,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:35:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-19 06:35:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 725. [2020-08-19 06:35:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2020-08-19 06:35:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 857 transitions. [2020-08-19 06:35:34,156 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 857 transitions. Word has length 88 [2020-08-19 06:35:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:34,157 INFO L479 AbstractCegarLoop]: Abstraction has 725 states and 857 transitions. [2020-08-19 06:35:34,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:35:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 857 transitions. [2020-08-19 06:35:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 06:35:34,162 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:34,162 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] [2020-08-19 06:35:34,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:35:34,163 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:34,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:34,163 INFO L82 PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times [2020-08-19 06:35:34,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:34,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434895860] [2020-08-19 06:35:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:35:34,229 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:35:34,229 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:35:34,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:35:34,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:35:34 BoogieIcfgContainer [2020-08-19 06:35:34,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:35:34,278 INFO L168 Benchmark]: Toolchain (without parser) took 31743.88 ms. Allocated memory was 147.8 MB in the beginning and 620.8 MB in the end (delta: 472.9 MB). Free memory was 102.6 MB in the beginning and 496.6 MB in the end (delta: -394.1 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:34,281 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:35:34,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.34 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.4 MB in the beginning and 169.7 MB in the end (delta: -67.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:34,288 INFO L168 Benchmark]: Boogie Preprocessor took 94.86 ms. Allocated memory is still 204.5 MB. Free memory was 169.7 MB in the beginning and 165.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:34,289 INFO L168 Benchmark]: RCFGBuilder took 1259.48 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 165.8 MB in the beginning and 185.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:34,290 INFO L168 Benchmark]: TraceAbstraction took 29719.36 ms. Allocated memory was 234.4 MB in the beginning and 620.8 MB in the end (delta: 386.4 MB). Free memory was 185.7 MB in the beginning and 496.6 MB in the end (delta: -310.9 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:34,298 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.34 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.4 MB in the beginning and 169.7 MB in the end (delta: -67.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.86 ms. Allocated memory is still 204.5 MB. Free memory was 169.7 MB in the beginning and 165.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1259.48 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 165.8 MB in the beginning and 185.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29719.36 ms. Allocated memory was 234.4 MB in the beginning and 620.8 MB in the end (delta: 386.4 MB). Free memory was 185.7 MB in the beginning and 496.6 MB in the end (delta: -310.9 MB). Peak memory consumption was 75.5 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: 29.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 24.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1166 SDtfs, 2093 SDslu, 1029 SDs, 0 SdLazy, 5353 SolverSat, 1313 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s 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: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 586 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s 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...