/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:58:56,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:58:56,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:58:56,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:58:56,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:58:56,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:58:56,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:58:56,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:58:56,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:58:56,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:58:56,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:58:56,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:58:56,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:58:56,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:58:56,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:58:56,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:58:56,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:58:56,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:58:56,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:58:56,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:58:56,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:58:56,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:58:56,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:58:56,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:58:56,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:58:56,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:58:56,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:58:56,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:58:56,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:58:56,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:58:56,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:58:56,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:58:56,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:58:56,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:58:56,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:58:56,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:58:56,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:58:56,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:58:56,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:58:56,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:58:56,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:58:56,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:58:56,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:58:56,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:58:56,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:58:56,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:58:56,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:58:56,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:58:56,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:58:56,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:58:56,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:58:56,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:58:56,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:58:56,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:58:56,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:58:56,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:58:56,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:58:56,089 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:58:56,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:58:56,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:58:56,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:58:56,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:58:56,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:58:56,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:58:56,091 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:58:56,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:58:56,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:58:56,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:58:56,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:58:56,433 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:58:56,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-22 17:58:56,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab3e21283/2d22497cdaed44bba46b9e78bc3e683b/FLAG8407902ec [2020-08-22 17:58:57,022 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:58:57,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-22 17:58:57,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab3e21283/2d22497cdaed44bba46b9e78bc3e683b/FLAG8407902ec [2020-08-22 17:58:57,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab3e21283/2d22497cdaed44bba46b9e78bc3e683b [2020-08-22 17:58:57,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:58:57,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:58:57,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:58:57,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:58:57,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:58:57,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:58:57" (1/1) ... [2020-08-22 17:58:57,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b37d73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:57, skipping insertion in model container [2020-08-22 17:58:57,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:58:57" (1/1) ... [2020-08-22 17:58:57,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:58:57,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:58:57,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:58:57,827 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:58:58,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:58:58,174 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:58:58,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58 WrapperNode [2020-08-22 17:58:58,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:58:58,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:58:58,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:58:58,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:58:58,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58" (1/1) ... [2020-08-22 17:58:58,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58" (1/1) ... [2020-08-22 17:58:58,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58" (1/1) ... [2020-08-22 17:58:58,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58" (1/1) ... [2020-08-22 17:58:58,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58" (1/1) ... [2020-08-22 17:58:58,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58" (1/1) ... [2020-08-22 17:58:58,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58" (1/1) ... [2020-08-22 17:58:58,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:58:58,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:58:58,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:58:58,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:58:58,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58" (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 [2020-08-22 17:58:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:58:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:58:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:58:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:58:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:58:58,377 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:58:58,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:58:58,377 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:58:58,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:58:58,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:58:58,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:58:58,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:58:58,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:58:58,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:58:58,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:58:58,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:58:58,379 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:58:58,379 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:58:58,379 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:58:58,380 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:58:58,380 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:58:58,380 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:58:58,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:58:58,381 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:58:58,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:58:58,381 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:58:58,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:58:58,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:58:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:58:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:58:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:58:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:58:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:58:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:58:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 17:58:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 17:58:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:58:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:58:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 17:58:58,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 17:58:58,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:58:58,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:58:58,384 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:58:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:58:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:58:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:58:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:58:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:58:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:58:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:58:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:58:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:58:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:58:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:58:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:58:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:58:58,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:58:58,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:58:58,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:58:58,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:58:58,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:58:58,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:58:58,388 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:58:58,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:58:58,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:58:58,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:58:58,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:58:58,388 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:58:58,388 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:58:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:58:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:58:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:58:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:58:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:58:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:58:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:58:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 17:58:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:58:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:58:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:58:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:58:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:58:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:58:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 17:58:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 17:58:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 17:58:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:58:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:58:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:58:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:58:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:58:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:58:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:58:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:58:59,667 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:58:59,668 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:58:59,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:58:59 BoogieIcfgContainer [2020-08-22 17:58:59,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:58:59,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:58:59,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:58:59,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:58:59,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:58:57" (1/3) ... [2020-08-22 17:58:59,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15811bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:58:59, skipping insertion in model container [2020-08-22 17:58:59,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:58" (2/3) ... [2020-08-22 17:58:59,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15811bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:58:59, skipping insertion in model container [2020-08-22 17:58:59,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:58:59" (3/3) ... [2020-08-22 17:58:59,682 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-08-22 17:58:59,693 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:58:59,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:58:59,718 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:58:59,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:58:59,743 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:58:59,743 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:58:59,743 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:58:59,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:58:59,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:58:59,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:58:59,744 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:58:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-08-22 17:58:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 17:58:59,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:58:59,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:58:59,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:58:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:58:59,795 INFO L82 PathProgramCache]: Analyzing trace with hash 581335990, now seen corresponding path program 1 times [2020-08-22 17:58:59,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:58:59,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101551275] [2020-08-22 17:58:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:58:59,874 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:00,534 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:00,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:00,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:00,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:00,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:00,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:59:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:00,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101551275] [2020-08-22 17:59:00,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:00,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:59:00,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529775207] [2020-08-22 17:59:00,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:59:00,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:00,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:59:00,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:59:00,727 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 4 states. [2020-08-22 17:59:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:01,957 INFO L93 Difference]: Finished difference Result 463 states and 549 transitions. [2020-08-22 17:59:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 17:59:01,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-22 17:59:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:01,979 INFO L225 Difference]: With dead ends: 463 [2020-08-22 17:59:01,979 INFO L226 Difference]: Without dead ends: 299 [2020-08-22 17:59:01,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:59:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-08-22 17:59:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 249. [2020-08-22 17:59:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-08-22 17:59:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-08-22 17:59:02,183 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 148 [2020-08-22 17:59:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:02,186 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-08-22 17:59:02,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:59:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-08-22 17:59:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 17:59:02,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:02,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:02,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:59:02,204 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:02,205 INFO L82 PathProgramCache]: Analyzing trace with hash 170641553, now seen corresponding path program 1 times [2020-08-22 17:59:02,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:02,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637372685] [2020-08-22 17:59:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:02,211 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,660 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 17:59:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:59:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:02,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637372685] [2020-08-22 17:59:02,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:02,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 17:59:02,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046786417] [2020-08-22 17:59:02,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 17:59:02,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:02,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 17:59:02,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:59:02,799 INFO L87 Difference]: Start difference. First operand 249 states and 269 transitions. Second operand 5 states. [2020-08-22 17:59:03,479 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:04,452 INFO L93 Difference]: Finished difference Result 379 states and 430 transitions. [2020-08-22 17:59:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 17:59:04,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-08-22 17:59:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:04,457 INFO L225 Difference]: With dead ends: 379 [2020-08-22 17:59:04,457 INFO L226 Difference]: Without dead ends: 288 [2020-08-22 17:59:04,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:59:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-08-22 17:59:04,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 239. [2020-08-22 17:59:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-22 17:59:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 256 transitions. [2020-08-22 17:59:04,566 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 256 transitions. Word has length 149 [2020-08-22 17:59:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:04,566 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 256 transitions. [2020-08-22 17:59:04,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 17:59:04,567 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 256 transitions. [2020-08-22 17:59:04,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 17:59:04,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:04,569 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] [2020-08-22 17:59:04,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:59:04,569 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:04,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:04,570 INFO L82 PathProgramCache]: Analyzing trace with hash -896171093, now seen corresponding path program 1 times [2020-08-22 17:59:04,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:04,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889443368] [2020-08-22 17:59:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:04,573 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:04,871 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:04,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:04,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:59:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:04,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:59:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:04,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:59:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:05,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889443368] [2020-08-22 17:59:05,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:05,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:59:05,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836672212] [2020-08-22 17:59:05,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:59:05,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:59:05,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:59:05,009 INFO L87 Difference]: Start difference. First operand 239 states and 256 transitions. Second operand 11 states. [2020-08-22 17:59:05,767 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:06,225 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:06,598 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 17:59:06,873 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:07,116 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:07,336 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:08,335 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:10,603 INFO L93 Difference]: Finished difference Result 654 states and 768 transitions. [2020-08-22 17:59:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 17:59:10,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2020-08-22 17:59:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:10,610 INFO L225 Difference]: With dead ends: 654 [2020-08-22 17:59:10,611 INFO L226 Difference]: Without dead ends: 530 [2020-08-22 17:59:10,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-08-22 17:59:10,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-08-22 17:59:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 415. [2020-08-22 17:59:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-22 17:59:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 460 transitions. [2020-08-22 17:59:10,774 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 460 transitions. Word has length 162 [2020-08-22 17:59:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:10,774 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 460 transitions. [2020-08-22 17:59:10,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:59:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 460 transitions. [2020-08-22 17:59:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-22 17:59:10,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:10,778 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] [2020-08-22 17:59:10,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:59:10,778 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:10,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash 600016420, now seen corresponding path program 1 times [2020-08-22 17:59:10,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:10,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077681105] [2020-08-22 17:59:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:10,782 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,112 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:11,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:59:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:59:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 17:59:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:11,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077681105] [2020-08-22 17:59:11,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:11,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:59:11,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028589358] [2020-08-22 17:59:11,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:59:11,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:11,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:59:11,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:59:11,257 INFO L87 Difference]: Start difference. First operand 415 states and 460 transitions. Second operand 10 states. [2020-08-22 17:59:11,796 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:13,199 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:13,470 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:13,772 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:14,031 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:14,277 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:14,531 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:14,777 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:15,185 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:16,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:16,333 INFO L93 Difference]: Finished difference Result 1135 states and 1377 transitions. [2020-08-22 17:59:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 17:59:16,334 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-08-22 17:59:16,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:16,341 INFO L225 Difference]: With dead ends: 1135 [2020-08-22 17:59:16,341 INFO L226 Difference]: Without dead ends: 835 [2020-08-22 17:59:16,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 17:59:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-08-22 17:59:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 667. [2020-08-22 17:59:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-08-22 17:59:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 749 transitions. [2020-08-22 17:59:16,562 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 749 transitions. Word has length 167 [2020-08-22 17:59:16,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:16,563 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 749 transitions. [2020-08-22 17:59:16,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:59:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 749 transitions. [2020-08-22 17:59:16,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 17:59:16,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:16,566 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] [2020-08-22 17:59:16,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:59:16,567 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:16,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:16,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1379081180, now seen corresponding path program 1 times [2020-08-22 17:59:16,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:16,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213195215] [2020-08-22 17:59:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:16,570 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:16,883 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:16,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:16,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:16,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 17:59:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:59:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 17:59:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:17,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213195215] [2020-08-22 17:59:17,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:17,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:59:17,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392351924] [2020-08-22 17:59:17,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:59:17,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:17,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:59:17,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:59:17,153 INFO L87 Difference]: Start difference. First operand 667 states and 749 transitions. Second operand 11 states. [2020-08-22 17:59:17,623 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:18,891 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:19,122 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:19,404 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:19,680 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:19,925 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:20,556 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:20,815 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:21,158 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:22,383 INFO L93 Difference]: Finished difference Result 1773 states and 2187 transitions. [2020-08-22 17:59:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 17:59:22,383 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-08-22 17:59:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:22,393 INFO L225 Difference]: With dead ends: 1773 [2020-08-22 17:59:22,393 INFO L226 Difference]: Without dead ends: 1221 [2020-08-22 17:59:22,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 17:59:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-08-22 17:59:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 933. [2020-08-22 17:59:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-08-22 17:59:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1055 transitions. [2020-08-22 17:59:22,736 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1055 transitions. Word has length 172 [2020-08-22 17:59:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:22,736 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1055 transitions. [2020-08-22 17:59:22,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:59:22,737 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1055 transitions. [2020-08-22 17:59:22,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:59:22,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:22,742 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] [2020-08-22 17:59:22,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:59:22,743 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:22,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:22,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1429417703, now seen corresponding path program 1 times [2020-08-22 17:59:22,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:22,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624453035] [2020-08-22 17:59:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:22,747 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,030 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:23,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:59:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:59:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:59:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:59:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:23,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624453035] [2020-08-22 17:59:23,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:23,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 17:59:23,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903153442] [2020-08-22 17:59:23,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 17:59:23,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:23,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 17:59:23,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 17:59:23,264 INFO L87 Difference]: Start difference. First operand 933 states and 1055 transitions. Second operand 12 states. [2020-08-22 17:59:24,850 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:25,098 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:59:25,361 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 17:59:25,655 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:25,911 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:26,140 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:28,133 INFO L93 Difference]: Finished difference Result 2398 states and 3007 transitions. [2020-08-22 17:59:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 17:59:28,133 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 200 [2020-08-22 17:59:28,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:28,145 INFO L225 Difference]: With dead ends: 2398 [2020-08-22 17:59:28,145 INFO L226 Difference]: Without dead ends: 1580 [2020-08-22 17:59:28,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2020-08-22 17:59:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-08-22 17:59:28,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 971. [2020-08-22 17:59:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-08-22 17:59:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1093 transitions. [2020-08-22 17:59:28,583 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1093 transitions. Word has length 200 [2020-08-22 17:59:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:28,583 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1093 transitions. [2020-08-22 17:59:28,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 17:59:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1093 transitions. [2020-08-22 17:59:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:59:28,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:28,590 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] [2020-08-22 17:59:28,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:59:28,591 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:28,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:28,591 INFO L82 PathProgramCache]: Analyzing trace with hash 289623879, now seen corresponding path program 1 times [2020-08-22 17:59:28,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:28,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804489862] [2020-08-22 17:59:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:28,595 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:28,913 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:28,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:28,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:28,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:28,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:28,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:59:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:59:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:59:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:59:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:29,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804489862] [2020-08-22 17:59:29,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:29,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 17:59:29,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869822084] [2020-08-22 17:59:29,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 17:59:29,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:29,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 17:59:29,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-08-22 17:59:29,142 INFO L87 Difference]: Start difference. First operand 971 states and 1093 transitions. Second operand 15 states. [2020-08-22 17:59:29,789 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:30,020 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:59:30,262 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:30,511 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:30,776 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:31,784 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:32,035 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:32,315 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:32,579 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:32,814 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:35,506 INFO L93 Difference]: Finished difference Result 2480 states and 3145 transitions. [2020-08-22 17:59:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 17:59:35,507 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 200 [2020-08-22 17:59:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:35,519 INFO L225 Difference]: With dead ends: 2480 [2020-08-22 17:59:35,520 INFO L226 Difference]: Without dead ends: 1624 [2020-08-22 17:59:35,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 17:59:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-08-22 17:59:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 995. [2020-08-22 17:59:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-08-22 17:59:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1117 transitions. [2020-08-22 17:59:35,885 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1117 transitions. Word has length 200 [2020-08-22 17:59:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:35,888 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1117 transitions. [2020-08-22 17:59:35,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 17:59:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1117 transitions. [2020-08-22 17:59:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:59:35,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:35,894 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] [2020-08-22 17:59:35,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:59:35,894 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:35,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1841498812, now seen corresponding path program 1 times [2020-08-22 17:59:35,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:35,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521446015] [2020-08-22 17:59:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:35,899 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,180 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:59:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:59:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:59:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:59:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:36,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521446015] [2020-08-22 17:59:36,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:36,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:59:36,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407050571] [2020-08-22 17:59:36,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:59:36,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:59:36,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:59:36,382 INFO L87 Difference]: Start difference. First operand 995 states and 1117 transitions. Second operand 9 states. [2020-08-22 17:59:36,946 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:37,636 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:41,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:41,600 INFO L93 Difference]: Finished difference Result 4015 states and 5133 transitions. [2020-08-22 17:59:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-22 17:59:41,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 200 [2020-08-22 17:59:41,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:41,623 INFO L225 Difference]: With dead ends: 4015 [2020-08-22 17:59:41,623 INFO L226 Difference]: Without dead ends: 3135 [2020-08-22 17:59:41,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=338, Invalid=1302, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 17:59:41,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2020-08-22 17:59:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2147. [2020-08-22 17:59:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2020-08-22 17:59:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2443 transitions. [2020-08-22 17:59:42,391 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2443 transitions. Word has length 200 [2020-08-22 17:59:42,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:42,391 INFO L479 AbstractCegarLoop]: Abstraction has 2147 states and 2443 transitions. [2020-08-22 17:59:42,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:59:42,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2443 transitions. [2020-08-22 17:59:42,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-08-22 17:59:42,395 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:42,395 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] [2020-08-22 17:59:42,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:59:42,395 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:42,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:42,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1365562748, now seen corresponding path program 1 times [2020-08-22 17:59:42,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:42,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821288698] [2020-08-22 17:59:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:42,399 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,667 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:42,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:59:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:59:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:59:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 17:59:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-22 17:59:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-08-22 17:59:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:42,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821288698] [2020-08-22 17:59:42,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:42,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:59:42,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281645445] [2020-08-22 17:59:42,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:59:42,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:42,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:59:42,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:59:42,818 INFO L87 Difference]: Start difference. First operand 2147 states and 2443 transitions. Second operand 9 states. [2020-08-22 17:59:43,299 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:48,587 INFO L93 Difference]: Finished difference Result 4982 states and 6473 transitions. [2020-08-22 17:59:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 17:59:48,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2020-08-22 17:59:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:48,618 INFO L225 Difference]: With dead ends: 4982 [2020-08-22 17:59:48,618 INFO L226 Difference]: Without dead ends: 4979 [2020-08-22 17:59:48,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 17:59:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2020-08-22 17:59:49,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 3376. [2020-08-22 17:59:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3376 states. [2020-08-22 17:59:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 3929 transitions. [2020-08-22 17:59:49,875 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 3929 transitions. Word has length 205 [2020-08-22 17:59:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:49,876 INFO L479 AbstractCegarLoop]: Abstraction has 3376 states and 3929 transitions. [2020-08-22 17:59:49,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:59:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 3929 transitions. [2020-08-22 17:59:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-08-22 17:59:49,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:49,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:49,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:59:49,886 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:49,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1316661854, now seen corresponding path program 1 times [2020-08-22 17:59:49,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:49,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164078245] [2020-08-22 17:59:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:49,926 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:59:49,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:59:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:59:50,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:59:50,444 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:59:50,444 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:59:50,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 17:59:50,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:59:50 BoogieIcfgContainer [2020-08-22 17:59:50,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:59:50,477 INFO L168 Benchmark]: Toolchain (without parser) took 53136.86 ms. Allocated memory was 143.1 MB in the beginning and 975.7 MB in the end (delta: 832.6 MB). Free memory was 101.4 MB in the beginning and 116.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 817.4 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:50,478 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 143.1 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 17:59:50,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 832.52 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 101.2 MB in the beginning and 174.7 MB in the end (delta: -73.5 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:50,479 INFO L168 Benchmark]: Boogie Preprocessor took 126.92 ms. Allocated memory is still 205.5 MB. Free memory was 174.7 MB in the beginning and 170.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:50,480 INFO L168 Benchmark]: RCFGBuilder took 1371.41 ms. Allocated memory was 205.5 MB in the beginning and 236.5 MB in the end (delta: 30.9 MB). Free memory was 170.4 MB in the beginning and 180.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:50,481 INFO L168 Benchmark]: TraceAbstraction took 50799.86 ms. Allocated memory was 236.5 MB in the beginning and 975.7 MB in the end (delta: 739.2 MB). Free memory was 180.6 MB in the beginning and 116.6 MB in the end (delta: 64.0 MB). Peak memory consumption was 803.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:50,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 143.1 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 832.52 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 101.2 MB in the beginning and 174.7 MB in the end (delta: -73.5 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.92 ms. Allocated memory is still 205.5 MB. Free memory was 174.7 MB in the beginning and 170.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1371.41 ms. Allocated memory was 205.5 MB in the beginning and 236.5 MB in the end (delta: 30.9 MB). Free memory was 170.4 MB in the beginning and 180.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50799.86 ms. Allocated memory was 236.5 MB in the beginning and 975.7 MB in the end (delta: 739.2 MB). Free memory was 180.6 MB in the beginning and 116.6 MB in the end (delta: 64.0 MB). Peak memory consumption was 803.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 900]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int cleanupTimeShifts = 4; [L651] int pumpRunning = 0; [L652] int systemActive = 1; [L905] int methAndRunningLastTime ; [L623] int retValue_acc ; [L624] int tmp ; [L628] FCALL select_helpers() [L629] FCALL select_features() [L630] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L630] RET, EXPR valid_product() [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) [L634] FCALL setup() [L635] CALL runTest() [L616] CALL __utac_acc__Specification2_spec__1() [L910] methAndRunningLastTime = 0 [L616] RET __utac_acc__Specification2_spec__1() [L617] CALL test() [L828] int splverifierCounter ; [L829] int tmp ; [L830] int tmp___0 ; [L831] int tmp___1 ; [L832] int tmp___2 ; [L835] splverifierCounter = 0 [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp) [L849] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L849] RET waterRise() [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp___0) [L859] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L859] RET changeMethaneLevel() [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___2) [L869] CALL startSystem() [L822] systemActive = 1 [L869] RET startSystem() [L884] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L785] int retValue_acc ; [L786] int tmp ; [L787] int tmp___0 ; [L791] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L791] RET, EXPR isHighWaterSensorDry() [L791] tmp = isHighWaterSensorDry() [L793] COND FALSE !(\read(tmp)) [L796] tmp___0 = 1 [L798] retValue_acc = tmp___0 [L799] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L716] pumpRunning = 1 [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND FALSE !(\read(methAndRunningLastTime)) [L932] methAndRunningLastTime = 1 [L674] RET __utac_acc__Specification2_spec__2() [L884] RET timeShift() [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp)) [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp___0)) [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___2) [L869] CALL startSystem() [L822] systemActive = 1 [L869] RET startSystem() [L884] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND TRUE \read(methAndRunningLastTime) [L929] CALL __automaton_fail() [L900] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.7s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 41.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2144 SDtfs, 7578 SDslu, 4910 SDs, 0 SdLazy, 10135 SolverSat, 2576 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 483 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1791 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3376occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 4499 StatesRemovedByMinimization, 9 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...