/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:53:13,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:53:13,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:53:13,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:53:13,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:53:13,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:53:13,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:53:13,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:53:13,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:53:13,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:53:13,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:53:13,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:53:13,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:53:13,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:53:13,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:53:13,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:53:13,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:53:13,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:53:13,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:53:13,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:53:13,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:53:13,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:53:13,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:53:13,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:53:13,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:53:13,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:53:13,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:53:13,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:53:13,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:53:13,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:53:13,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:53:13,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:53:13,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:53:13,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:53:13,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:53:13,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:53:13,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:53:13,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:53:13,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:53:13,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:53:13,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:53:13,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:53:13,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:53:13,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:53:13,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:53:13,671 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:53:13,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:53:13,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:53:13,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:53:13,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:53:13,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:53:13,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:53:13,672 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:53:13,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:53:13,673 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:53:13,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:53:13,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:53:13,673 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:53:13,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:53:13,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:53:13,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:53:13,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:53:13,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:53:13,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:53:13,675 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:53:14,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:53:14,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:53:14,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:53:14,142 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:53:14,143 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:53:14,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2021-02-21 18:53:14,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e85a5c8f5/b6ab11bcc2d14c6f8e396e3c3f0c7e28/FLAGc77148a19 [2021-02-21 18:53:14,955 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:53:14,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2021-02-21 18:53:14,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e85a5c8f5/b6ab11bcc2d14c6f8e396e3c3f0c7e28/FLAGc77148a19 [2021-02-21 18:53:15,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e85a5c8f5/b6ab11bcc2d14c6f8e396e3c3f0c7e28 [2021-02-21 18:53:15,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:53:15,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:53:15,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:53:15,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:53:15,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:53:15,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:53:15" (1/1) ... [2021-02-21 18:53:15,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ffbf03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15, skipping insertion in model container [2021-02-21 18:53:15,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:53:15" (1/1) ... [2021-02-21 18:53:15,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:53:15,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:53:15,660 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c[19011,19024] [2021-02-21 18:53:15,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:53:15,697 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:53:15,869 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c[19011,19024] [2021-02-21 18:53:15,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:53:15,925 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:53:15,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15 WrapperNode [2021-02-21 18:53:15,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:53:15,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:53:15,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:53:15,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:53:15,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15" (1/1) ... [2021-02-21 18:53:15,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15" (1/1) ... [2021-02-21 18:53:15,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15" (1/1) ... [2021-02-21 18:53:15,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15" (1/1) ... [2021-02-21 18:53:15,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15" (1/1) ... [2021-02-21 18:53:16,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15" (1/1) ... [2021-02-21 18:53:16,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15" (1/1) ... [2021-02-21 18:53:16,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:53:16,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:53:16,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:53:16,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:53:16,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-21 18:53:16,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:53:16,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:53:16,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:53:16,133 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:53:16,133 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:53:16,133 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:53:16,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:53:16,134 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:53:16,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:53:16,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:53:16,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:53:16,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:53:16,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:53:16,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:53:16,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:53:16,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:53:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:53:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:53:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:53:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:53:16,137 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:53:16,137 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:53:16,137 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:53:16,137 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:53:16,137 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:53:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:53:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:53:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:53:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:53:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:53:16,139 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:53:16,139 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:53:16,139 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:53:16,139 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:53:16,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:53:16,139 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:53:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:53:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:53:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:53:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:53:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:53:16,141 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:53:16,141 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:53:16,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:53:16,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:53:16,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:53:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:53:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:53:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:53:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:53:16,142 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:53:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:53:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:53:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:53:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:53:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:53:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:53:16,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:53:16,144 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:53:16,144 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:53:16,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:53:16,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:53:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:53:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:53:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:53:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:53:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:53:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:53:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:53:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:53:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:53:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:53:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:53:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:53:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:53:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:53:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:53:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:53:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:53:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:53:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:53:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:53:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:53:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:53:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:53:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:53:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:53:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:53:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:53:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:53:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:53:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:53:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:53:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:53:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:53:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:53:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:53:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:53:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:53:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:53:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:53:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:53:18,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:53:18,106 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:53:18,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:53:18 BoogieIcfgContainer [2021-02-21 18:53:18,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:53:18,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:53:18,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:53:18,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:53:18,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:53:15" (1/3) ... [2021-02-21 18:53:18,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7b437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:53:18, skipping insertion in model container [2021-02-21 18:53:18,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:15" (2/3) ... [2021-02-21 18:53:18,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7b437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:53:18, skipping insertion in model container [2021-02-21 18:53:18,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:53:18" (3/3) ... [2021-02-21 18:53:18,126 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product54.cil.c [2021-02-21 18:53:18,134 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:53:18,140 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:53:18,162 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:53:18,189 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:53:18,190 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:53:18,190 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:53:18,190 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:53:18,190 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:53:18,191 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:53:18,191 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:53:18,191 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:53:18,217 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states. [2021-02-21 18:53:18,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-21 18:53:18,241 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:18,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:53:18,243 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:18,250 INFO L82 PathProgramCache]: Analyzing trace with hash 806887695, now seen corresponding path program 1 times [2021-02-21 18:53:18,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:18,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696752643] [2021-02-21 18:53:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:18,360 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:18,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:18,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:18,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:18,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:19,423 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:19,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:19,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:19,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:19,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:19,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:19,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:19,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:19,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:19,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:19,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:19,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:19,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:19,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:19,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:19,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:19,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:19,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:53:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:19,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:19,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:19,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:53:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:19,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:19,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:19,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696752643] [2021-02-21 18:53:19,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:19,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:53:19,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990773826] [2021-02-21 18:53:19,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:53:19,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:19,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:53:19,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:53:19,645 INFO L87 Difference]: Start difference. First operand 351 states. Second operand 4 states. [2021-02-21 18:53:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:21,525 INFO L93 Difference]: Finished difference Result 560 states and 662 transitions. [2021-02-21 18:53:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 18:53:21,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-21 18:53:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:21,559 INFO L225 Difference]: With dead ends: 560 [2021-02-21 18:53:21,559 INFO L226 Difference]: Without dead ends: 350 [2021-02-21 18:53:21,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:53:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-02-21 18:53:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 299. [2021-02-21 18:53:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2021-02-21 18:53:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 327 transitions. [2021-02-21 18:53:21,860 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 327 transitions. Word has length 153 [2021-02-21 18:53:21,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:21,862 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 327 transitions. [2021-02-21 18:53:21,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:53:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 327 transitions. [2021-02-21 18:53:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-21 18:53:21,866 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:21,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:53:21,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:53:21,867 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:21,868 INFO L82 PathProgramCache]: Analyzing trace with hash -469458891, now seen corresponding path program 1 times [2021-02-21 18:53:21,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:21,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731454365] [2021-02-21 18:53:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:21,873 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:22,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:22,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,337 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:22,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:22,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:22,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:22,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:22,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:22,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:22,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 18:53:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:22,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:53:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:22,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:22,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:22,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731454365] [2021-02-21 18:53:22,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:22,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 18:53:22,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059276271] [2021-02-21 18:53:22,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 18:53:22,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:22,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 18:53:22,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:53:22,477 INFO L87 Difference]: Start difference. First operand 299 states and 327 transitions. Second operand 5 states. [2021-02-21 18:53:23,321 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:24,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:24,860 INFO L93 Difference]: Finished difference Result 484 states and 552 transitions. [2021-02-21 18:53:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 18:53:24,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-21 18:53:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:24,869 INFO L225 Difference]: With dead ends: 484 [2021-02-21 18:53:24,870 INFO L226 Difference]: Without dead ends: 339 [2021-02-21 18:53:24,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:53:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-02-21 18:53:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 289. [2021-02-21 18:53:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2021-02-21 18:53:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 314 transitions. [2021-02-21 18:53:25,007 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 314 transitions. Word has length 154 [2021-02-21 18:53:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:25,008 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 314 transitions. [2021-02-21 18:53:25,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 18:53:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 314 transitions. [2021-02-21 18:53:25,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-02-21 18:53:25,011 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:25,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:53:25,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:53:25,011 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:25,012 INFO L82 PathProgramCache]: Analyzing trace with hash 590113301, now seen corresponding path program 1 times [2021-02-21 18:53:25,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:25,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443079654] [2021-02-21 18:53:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:25,021 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:25,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:25,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:53:25,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,479 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:25,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:25,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:53:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:25,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:53:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:53:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:25,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:25,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443079654] [2021-02-21 18:53:25,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:25,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:53:25,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311216605] [2021-02-21 18:53:25,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:53:25,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:25,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:53:25,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:53:25,682 INFO L87 Difference]: Start difference. First operand 289 states and 314 transitions. Second operand 11 states. [2021-02-21 18:53:26,504 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:26,981 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:27,384 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:53:27,787 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:28,335 WARN L202 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:28,731 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:31,074 INFO L93 Difference]: Finished difference Result 531 states and 617 transitions. [2021-02-21 18:53:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:53:31,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2021-02-21 18:53:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:31,080 INFO L225 Difference]: With dead ends: 531 [2021-02-21 18:53:31,081 INFO L226 Difference]: Without dead ends: 362 [2021-02-21 18:53:31,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:53:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-02-21 18:53:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 289. [2021-02-21 18:53:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2021-02-21 18:53:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 313 transitions. [2021-02-21 18:53:31,248 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 313 transitions. Word has length 167 [2021-02-21 18:53:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:31,250 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 313 transitions. [2021-02-21 18:53:31,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:53:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 313 transitions. [2021-02-21 18:53:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-21 18:53:31,263 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:31,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:53:31,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:53:31,265 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:31,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:31,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1926891113, now seen corresponding path program 1 times [2021-02-21 18:53:31,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:31,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863599704] [2021-02-21 18:53:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:31,272 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:31,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:31,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:31,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:31,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:31,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,742 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:31,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:53:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:53:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:31,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:31,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:31,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:53:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-21 18:53:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:31,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-21 18:53:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:31,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:31,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:32,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863599704] [2021-02-21 18:53:32,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:32,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:53:32,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113632168] [2021-02-21 18:53:32,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:53:32,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:32,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:53:32,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:53:32,009 INFO L87 Difference]: Start difference. First operand 289 states and 313 transitions. Second operand 8 states. [2021-02-21 18:53:32,709 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:34,870 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:36,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:36,424 INFO L93 Difference]: Finished difference Result 725 states and 867 transitions. [2021-02-21 18:53:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 18:53:36,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2021-02-21 18:53:36,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:36,433 INFO L225 Difference]: With dead ends: 725 [2021-02-21 18:53:36,434 INFO L226 Difference]: Without dead ends: 556 [2021-02-21 18:53:36,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-02-21 18:53:36,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-02-21 18:53:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 415. [2021-02-21 18:53:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2021-02-21 18:53:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 448 transitions. [2021-02-21 18:53:36,661 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 448 transitions. Word has length 185 [2021-02-21 18:53:36,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:36,662 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 448 transitions. [2021-02-21 18:53:36,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:53:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 448 transitions. [2021-02-21 18:53:36,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-21 18:53:36,665 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:36,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:53:36,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:53:36,666 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:36,666 INFO L82 PathProgramCache]: Analyzing trace with hash -47420180, now seen corresponding path program 1 times [2021-02-21 18:53:36,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:36,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821162535] [2021-02-21 18:53:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:36,670 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:36,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:36,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:36,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:36,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:36,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:36,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:36,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:36,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:36,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:36,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:53:36,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:36,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,065 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:37,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:53:37,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:53:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:53:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:37,230 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 18:53:37,234 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 18:53:37,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:37,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-21 18:53:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 18:53:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:37,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:37,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:37,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821162535] [2021-02-21 18:53:37,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:37,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:53:37,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090743114] [2021-02-21 18:53:37,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:53:37,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:37,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:53:37,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:53:37,385 INFO L87 Difference]: Start difference. First operand 415 states and 448 transitions. Second operand 11 states. [2021-02-21 18:53:38,122 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:39,552 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:39,970 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:53:40,364 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:53:40,729 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:41,175 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-02-21 18:53:41,545 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:44,593 INFO L93 Difference]: Finished difference Result 1146 states and 1411 transitions. [2021-02-21 18:53:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 18:53:44,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2021-02-21 18:53:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:44,601 INFO L225 Difference]: With dead ends: 1146 [2021-02-21 18:53:44,601 INFO L226 Difference]: Without dead ends: 851 [2021-02-21 18:53:44,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2021-02-21 18:53:44,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2021-02-21 18:53:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 609. [2021-02-21 18:53:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2021-02-21 18:53:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 668 transitions. [2021-02-21 18:53:44,889 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 668 transitions. Word has length 209 [2021-02-21 18:53:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:44,890 INFO L480 AbstractCegarLoop]: Abstraction has 609 states and 668 transitions. [2021-02-21 18:53:44,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:53:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 668 transitions. [2021-02-21 18:53:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-21 18:53:44,894 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:44,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:53:44,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:53:44,894 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:44,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:44,895 INFO L82 PathProgramCache]: Analyzing trace with hash 22097929, now seen corresponding path program 1 times [2021-02-21 18:53:44,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:44,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546493718] [2021-02-21 18:53:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:44,899 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:44,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:44,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:44,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:44,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:44,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:44,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:44,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:44,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:44,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:44,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:44,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:44,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:44,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:44,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,293 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:45,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:53:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:53:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-21 18:53:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:45,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:45,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 18:53:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:45,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:45,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:45,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546493718] [2021-02-21 18:53:45,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:45,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:53:45,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783076711] [2021-02-21 18:53:45,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:53:45,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:45,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:53:45,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:53:45,575 INFO L87 Difference]: Start difference. First operand 609 states and 668 transitions. Second operand 11 states. [2021-02-21 18:53:46,278 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:48,398 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:48,809 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:49,227 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:49,644 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:50,022 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:50,404 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:50,752 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:51,335 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:54,178 INFO L93 Difference]: Finished difference Result 1940 states and 2383 transitions. [2021-02-21 18:53:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-21 18:53:54,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2021-02-21 18:53:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:54,188 INFO L225 Difference]: With dead ends: 1940 [2021-02-21 18:53:54,188 INFO L226 Difference]: Without dead ends: 1451 [2021-02-21 18:53:54,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-02-21 18:53:54,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2021-02-21 18:53:54,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1022. [2021-02-21 18:53:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2021-02-21 18:53:54,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1126 transitions. [2021-02-21 18:53:54,671 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1126 transitions. Word has length 209 [2021-02-21 18:53:54,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:54,672 INFO L480 AbstractCegarLoop]: Abstraction has 1022 states and 1126 transitions. [2021-02-21 18:53:54,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:53:54,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1126 transitions. [2021-02-21 18:53:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 18:53:54,682 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:54,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:53:54,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:53:54,683 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:54,683 INFO L82 PathProgramCache]: Analyzing trace with hash 144639169, now seen corresponding path program 1 times [2021-02-21 18:53:54,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:54,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728417796] [2021-02-21 18:53:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:54,687 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:54,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:54,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:54,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:54,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:54,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:54,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:54,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:54,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:54,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,085 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:53:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:53:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:53:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:55,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:55,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-02-21 18:53:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-02-21 18:53:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:55,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:55,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728417796] [2021-02-21 18:53:55,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:55,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 18:53:55,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059299448] [2021-02-21 18:53:55,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 18:53:55,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:55,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 18:53:55,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-02-21 18:53:55,321 INFO L87 Difference]: Start difference. First operand 1022 states and 1126 transitions. Second operand 12 states. [2021-02-21 18:53:56,044 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:58,130 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:58,512 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:58,890 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:59,315 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:59,796 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:54:00,238 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:54:00,620 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:54:01,014 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:03,702 INFO L93 Difference]: Finished difference Result 2613 states and 3174 transitions. [2021-02-21 18:54:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-21 18:54:03,703 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 214 [2021-02-21 18:54:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:03,716 INFO L225 Difference]: With dead ends: 2613 [2021-02-21 18:54:03,716 INFO L226 Difference]: Without dead ends: 1711 [2021-02-21 18:54:03,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=429, Invalid=1211, Unknown=0, NotChecked=0, Total=1640 [2021-02-21 18:54:03,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2021-02-21 18:54:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1018. [2021-02-21 18:54:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2021-02-21 18:54:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1118 transitions. [2021-02-21 18:54:04,191 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1118 transitions. Word has length 214 [2021-02-21 18:54:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:04,192 INFO L480 AbstractCegarLoop]: Abstraction has 1018 states and 1118 transitions. [2021-02-21 18:54:04,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 18:54:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1118 transitions. [2021-02-21 18:54:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-02-21 18:54:04,197 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:04,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:54:04,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:54:04,197 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:04,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash 595634052, now seen corresponding path program 1 times [2021-02-21 18:54:04,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:04,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160998014] [2021-02-21 18:54:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:04,201 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,569 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:54:04,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:54:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:54:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:54:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:54:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:54:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:54:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:54:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:54:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:04,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:04,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:04,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:04,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:04,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:54:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:54:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-21 18:54:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-02-21 18:54:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:04,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160998014] [2021-02-21 18:54:04,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:04,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 18:54:04,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84170103] [2021-02-21 18:54:04,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 18:54:04,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:04,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 18:54:04,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-02-21 18:54:04,847 INFO L87 Difference]: Start difference. First operand 1018 states and 1118 transitions. Second operand 12 states. [2021-02-21 18:54:06,414 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:54:06,876 WARN L202 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:54:07,351 WARN L202 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-21 18:54:07,757 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:08,154 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:54:08,528 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:10,993 INFO L93 Difference]: Finished difference Result 2631 states and 3221 transitions. [2021-02-21 18:54:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 18:54:10,993 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 215 [2021-02-21 18:54:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:11,003 INFO L225 Difference]: With dead ends: 2631 [2021-02-21 18:54:11,003 INFO L226 Difference]: Without dead ends: 1733 [2021-02-21 18:54:11,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2021-02-21 18:54:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2021-02-21 18:54:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1050. [2021-02-21 18:54:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2021-02-21 18:54:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1150 transitions. [2021-02-21 18:54:11,462 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1150 transitions. Word has length 215 [2021-02-21 18:54:11,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:11,462 INFO L480 AbstractCegarLoop]: Abstraction has 1050 states and 1150 transitions. [2021-02-21 18:54:11,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 18:54:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1150 transitions. [2021-02-21 18:54:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-02-21 18:54:11,467 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:11,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:54:11,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:54:11,468 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:11,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:11,468 INFO L82 PathProgramCache]: Analyzing trace with hash 533305316, now seen corresponding path program 1 times [2021-02-21 18:54:11,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:11,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574483045] [2021-02-21 18:54:11,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:11,471 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:11,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:11,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,848 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:54:11,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:54:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:54:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:54:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:11,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:11,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:54:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:54:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:54:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:54:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:54:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:11,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:11,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:12,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:12,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:12,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:12,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:12,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:12,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:54:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:12,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:12,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:12,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:54:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:12,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-21 18:54:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:12,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:12,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-02-21 18:54:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:12,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:12,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574483045] [2021-02-21 18:54:12,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:12,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 18:54:12,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858497854] [2021-02-21 18:54:12,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 18:54:12,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:12,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 18:54:12,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:54:12,136 INFO L87 Difference]: Start difference. First operand 1050 states and 1150 transitions. Second operand 15 states. [2021-02-21 18:54:12,898 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:54:13,309 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:54:13,712 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:14,102 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:54:14,458 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:15,661 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:16,044 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:54:16,426 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:16,851 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:54:17,234 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:20,118 INFO L93 Difference]: Finished difference Result 2290 states and 2774 transitions. [2021-02-21 18:54:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-21 18:54:20,121 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 215 [2021-02-21 18:54:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:20,129 INFO L225 Difference]: With dead ends: 2290 [2021-02-21 18:54:20,129 INFO L226 Difference]: Without dead ends: 1360 [2021-02-21 18:54:20,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2021-02-21 18:54:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-02-21 18:54:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 889. [2021-02-21 18:54:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2021-02-21 18:54:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 956 transitions. [2021-02-21 18:54:20,628 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 956 transitions. Word has length 215 [2021-02-21 18:54:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:20,629 INFO L480 AbstractCegarLoop]: Abstraction has 889 states and 956 transitions. [2021-02-21 18:54:20,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 18:54:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 956 transitions. [2021-02-21 18:54:20,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-02-21 18:54:20,631 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:20,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:54:20,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:54:20,632 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:20,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:20,633 INFO L82 PathProgramCache]: Analyzing trace with hash 28236254, now seen corresponding path program 1 times [2021-02-21 18:54:20,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:20,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406336436] [2021-02-21 18:54:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:20,637 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:20,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:20,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:20,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:20,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:20,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:20,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,029 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:54:21,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:54:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:54:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:54:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:54:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:54:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:54:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:54:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:54:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-02-21 18:54:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:54:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:54:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-21 18:54:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-02-21 18:54:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:21,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406336436] [2021-02-21 18:54:21,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:21,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:54:21,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251559525] [2021-02-21 18:54:21,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:54:21,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:21,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:54:21,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:54:21,242 INFO L87 Difference]: Start difference. First operand 889 states and 956 transitions. Second operand 9 states. [2021-02-21 18:54:21,911 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:54:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:26,831 INFO L93 Difference]: Finished difference Result 2032 states and 2491 transitions. [2021-02-21 18:54:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 18:54:26,831 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2021-02-21 18:54:26,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:26,846 INFO L225 Difference]: With dead ends: 2032 [2021-02-21 18:54:26,846 INFO L226 Difference]: Without dead ends: 2029 [2021-02-21 18:54:26,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2021-02-21 18:54:26,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-02-21 18:54:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1367. [2021-02-21 18:54:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1367 states. [2021-02-21 18:54:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1470 transitions. [2021-02-21 18:54:27,623 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1470 transitions. Word has length 220 [2021-02-21 18:54:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:27,624 INFO L480 AbstractCegarLoop]: Abstraction has 1367 states and 1470 transitions. [2021-02-21 18:54:27,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:54:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1470 transitions. [2021-02-21 18:54:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-02-21 18:54:27,630 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:27,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:54:27,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:54:27,631 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:27,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1467323531, now seen corresponding path program 1 times [2021-02-21 18:54:27,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:27,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867794782] [2021-02-21 18:54:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:27,726 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-21 18:54:27,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:27,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:27,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:27,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:27,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:27,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:27,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:27,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:27,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:27,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:27,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:27,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:27,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:27,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:27,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:27,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,390 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2021-02-21 18:54:28,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-02-21 18:54:28,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,147 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2021-02-21 18:54:29,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-21 18:54:29,466 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2021-02-21 18:54:29,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-21 18:54:29,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,881 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2021-02-21 18:54:29,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 18:54:29,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:30,268 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2021-02-21 18:54:30,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 18:54:30,596 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2021-02-21 18:54:30,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-21 18:54:30,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:30,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:30,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:30,971 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2021-02-21 18:54:30,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 18:54:30,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,337 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2021-02-21 18:54:31,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 18:54:31,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,433 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 18:54:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:54:31,617 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:54:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:54:31,821 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:54:32,196 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:54:32,196 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:54:32,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 18:54:32,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:54:32 BoogieIcfgContainer [2021-02-21 18:54:32,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:54:32,230 INFO L168 Benchmark]: Toolchain (without parser) took 76992.28 ms. Allocated memory was 152.0 MB in the beginning and 950.0 MB in the end (delta: 798.0 MB). Free memory was 127.7 MB in the beginning and 864.7 MB in the end (delta: -737.0 MB). Peak memory consumption was 576.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:32,230 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:54:32,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.96 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 104.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:32,230 INFO L168 Benchmark]: Boogie Preprocessor took 99.67 ms. Allocated memory is still 152.0 MB. Free memory was 104.0 MB in the beginning and 100.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:32,231 INFO L168 Benchmark]: RCFGBuilder took 2083.59 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 100.0 MB in the beginning and 144.2 MB in the end (delta: -44.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:32,231 INFO L168 Benchmark]: TraceAbstraction took 74113.18 ms. Allocated memory was 182.5 MB in the beginning and 950.0 MB in the end (delta: 767.6 MB). Free memory was 144.2 MB in the beginning and 864.7 MB in the end (delta: -720.6 MB). Peak memory consumption was 560.8 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:32,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 673.96 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 104.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.67 ms. Allocated memory is still 152.0 MB. Free memory was 104.0 MB in the beginning and 100.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2083.59 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 100.0 MB in the beginning and 144.2 MB in the end (delta: -44.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 74113.18 ms. Allocated memory was 182.5 MB in the beginning and 950.0 MB in the end (delta: 767.6 MB). Free memory was 144.2 MB in the beginning and 864.7 MB in the end (delta: -720.6 MB). Peak memory consumption was 560.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1004]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L151] int methAndRunningLastTime ; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L630] int pumpRunning = 0; [L631] int systemActive = 1; [L862] int waterLevel = 1; [L863] int methaneLevelCritical = 0; [L125] int retValue_acc ; [L126] int tmp ; [L130] FCALL select_helpers() [L131] FCALL select_features() [L132] CALL, EXPR valid_product() [L991] int retValue_acc ; [L994] retValue_acc = 1 [L995] return (retValue_acc); [L132] RET, EXPR valid_product() [L132] tmp = valid_product() [L134] COND TRUE \read(tmp) [L136] FCALL setup() [L137] CALL runTest() [L115] CALL __utac_acc__Specification2_spec__1() [L156] methAndRunningLastTime = 0 [L115] RET __utac_acc__Specification2_spec__1() [L116] CALL test() [L558] int splverifierCounter ; [L559] int tmp ; [L560] int tmp___0 ; [L561] int tmp___1 ; [L562] int tmp___2 ; [L565] splverifierCounter = 0 [L567] COND TRUE 1 [L569] COND TRUE splverifierCounter < 4 [L575] tmp = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp) [L579] CALL waterRise() [L880] COND TRUE waterLevel < 2 [L881] waterLevel = waterLevel + 1 [L579] RET waterRise() [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___0) [L589] CALL changeMethaneLevel() [L892] COND FALSE !(\read(methaneLevelCritical)) [L895] methaneLevelCritical = 1 [L589] RET changeMethaneLevel() [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND TRUE \read(tmp___2) [L599] CALL startSystem() [L856] systemActive = 1 [L599] RET startSystem() [L612] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND TRUE \read(systemActive) [L646] CALL processEnvironment() [L718] int tmp ; [L721] COND FALSE !(\read(pumpRunning)) [L736] CALL processEnvironment__wrappee__lowWaterSensor() [L692] int tmp ; [L695] COND FALSE !(\read(pumpRunning)) [L710] CALL processEnvironment__wrappee__highWaterSensor() [L666] int tmp ; [L669] COND TRUE ! pumpRunning [L671] CALL, EXPR isHighWaterLevel() [L815] int retValue_acc ; [L816] int tmp ; [L817] int tmp___0 ; [L821] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L821] RET, EXPR isHighWaterSensorDry() [L821] tmp = isHighWaterSensorDry() [L823] COND FALSE !(\read(tmp)) [L826] tmp___0 = 1 [L828] retValue_acc = tmp___0 [L829] return (retValue_acc); [L671] RET, EXPR isHighWaterLevel() [L671] tmp = isHighWaterLevel() [L673] COND TRUE \read(tmp) [L675] CALL activatePump() [L746] pumpRunning = 1 [L675] RET activatePump() [L710] RET processEnvironment__wrappee__highWaterSensor() [L736] RET processEnvironment__wrappee__lowWaterSensor() [L646] RET processEnvironment() [L652] CALL __utac_acc__Specification2_spec__2() [L161] int tmp ; [L162] int tmp___0 ; [L166] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L166] RET, EXPR isMethaneLevelCritical() [L166] tmp = isMethaneLevelCritical() [L168] COND TRUE \read(tmp) [L170] CALL, EXPR isPumpRunning() [L770] int retValue_acc ; [L773] retValue_acc = pumpRunning [L774] return (retValue_acc); [L170] RET, EXPR isPumpRunning() [L170] tmp___0 = isPumpRunning() [L172] COND TRUE \read(tmp___0) [L173] COND FALSE !(\read(methAndRunningLastTime)) [L178] methAndRunningLastTime = 1 [L652] RET __utac_acc__Specification2_spec__2() [L612] RET timeShift() [L567] COND TRUE 1 [L569] COND TRUE splverifierCounter < 4 [L575] tmp = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp)) [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp___0)) [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND TRUE \read(tmp___2) [L599] CALL startSystem() [L856] systemActive = 1 [L599] RET startSystem() [L612] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND TRUE \read(systemActive) [L646] CALL processEnvironment() [L718] int tmp ; [L721] COND FALSE !(\read(pumpRunning)) [L736] CALL processEnvironment__wrappee__lowWaterSensor() [L692] int tmp ; [L695] COND FALSE !(\read(pumpRunning)) [L710] CALL processEnvironment__wrappee__highWaterSensor() [L666] int tmp ; [L669] COND TRUE ! pumpRunning [L671] CALL, EXPR isHighWaterLevel() [L815] int retValue_acc ; [L816] int tmp ; [L817] int tmp___0 ; [L821] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L821] RET, EXPR isHighWaterSensorDry() [L821] tmp = isHighWaterSensorDry() [L823] COND FALSE !(\read(tmp)) [L826] tmp___0 = 1 [L828] retValue_acc = tmp___0 [L829] return (retValue_acc); [L671] RET, EXPR isHighWaterLevel() [L671] tmp = isHighWaterLevel() [L673] COND TRUE \read(tmp) [L675] CALL activatePump() [L746] pumpRunning = 1 [L675] RET activatePump() [L710] RET processEnvironment__wrappee__highWaterSensor() [L736] RET processEnvironment__wrappee__lowWaterSensor() [L646] RET processEnvironment() [L652] CALL __utac_acc__Specification2_spec__2() [L161] int tmp ; [L162] int tmp___0 ; [L166] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L166] RET, EXPR isMethaneLevelCritical() [L166] tmp = isMethaneLevelCritical() [L168] COND TRUE \read(tmp) [L170] CALL, EXPR isPumpRunning() [L770] int retValue_acc ; [L773] retValue_acc = pumpRunning [L774] return (retValue_acc); [L170] RET, EXPR isPumpRunning() [L170] tmp___0 = isPumpRunning() [L172] COND TRUE \read(tmp___0) [L173] COND TRUE \read(methAndRunningLastTime) [L175] CALL __automaton_fail() [L1004] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 671 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 74.0s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 58.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2748 SDtfs, 8797 SDslu, 5721 SDs, 0 SdLazy, 12636 SolverSat, 2716 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 575 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 24.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1367occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 3495 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...