/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_spec3_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:21:30,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:21:30,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:21:30,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:21:30,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:21:30,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:21:30,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:21:30,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:21:30,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:21:30,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:21:30,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:21:30,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:21:30,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:21:30,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:21:30,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:21:30,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:21:30,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:21:30,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:21:30,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:21:30,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:21:30,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:21:30,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:21:30,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:21:30,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:21:30,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:21:30,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:21:30,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:21:30,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:21:30,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:21:30,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:21:30,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:21:30,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:21:30,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:21:30,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:21:30,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:21:30,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:21:30,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:21:30,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:21:30,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:21:30,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:21:30,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:21:30,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:21:30,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:21:30,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:21:30,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:21:30,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:21:30,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:21:30,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:21:30,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:21:30,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:21:30,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:21:30,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:21:30,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:21:30,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:21:30,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:21:30,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:21:30,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:21:30,295 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:21:30,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:21:30,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:21:30,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:21:30,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:21:30,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:21:30,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:21:30,296 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:21:30,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:21:30,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:21:30,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:21:30,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:21:30,752 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:21:30,753 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-09-04 15:21:30,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ff8d7471/749f7f500feb4a7c9cca4290a3d5755c/FLAG5f8c7a8a9 [2020-09-04 15:21:31,443 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:21:31,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-09-04 15:21:31,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ff8d7471/749f7f500feb4a7c9cca4290a3d5755c/FLAG5f8c7a8a9 [2020-09-04 15:21:31,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ff8d7471/749f7f500feb4a7c9cca4290a3d5755c [2020-09-04 15:21:31,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:21:31,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:21:31,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:21:31,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:21:31,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:21:31,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:21:31" (1/1) ... [2020-09-04 15:21:31,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5878563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:31, skipping insertion in model container [2020-09-04 15:21:31,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:21:31" (1/1) ... [2020-09-04 15:21:31,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:21:31,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:21:32,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:21:32,317 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:21:32,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:21:32,434 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:21:32,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32 WrapperNode [2020-09-04 15:21:32,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:21:32,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:21:32,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:21:32,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:21:32,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32" (1/1) ... [2020-09-04 15:21:32,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32" (1/1) ... [2020-09-04 15:21:32,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32" (1/1) ... [2020-09-04 15:21:32,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32" (1/1) ... [2020-09-04 15:21:32,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32" (1/1) ... [2020-09-04 15:21:32,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32" (1/1) ... [2020-09-04 15:21:32,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32" (1/1) ... [2020-09-04 15:21:32,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:21:32,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:21:32,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:21:32,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:21:32,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:21:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:21:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:21:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:21:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:21:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:21:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:21:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:21:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:21:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:21:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:21:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:21:32,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:21:32,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:21:32,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:21:32,639 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:21:32,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:21:32,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:21:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:21:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:21:32,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:21:32,642 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:21:32,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:21:32,644 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:21:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:21:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:21:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:21:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:21:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:21:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:21:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:21:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:21:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:21:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:21:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:21:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:21:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:21:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:21:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:21:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:21:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:21:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:21:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:21:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:21:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:21:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:21:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:21:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:21:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:21:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:21:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:21:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:21:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:21:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:21:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:21:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:21:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:21:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:21:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:21:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:21:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:21:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:21:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:21:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:21:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:21:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:21:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:21:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:21:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:21:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:21:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:21:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:21:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:21:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:21:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:21:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:21:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:21:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:21:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:21:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:21:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:21:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:21:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:21:33,725 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:21:33,725 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:21:33,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:21:33 BoogieIcfgContainer [2020-09-04 15:21:33,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:21:33,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:21:33,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:21:33,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:21:33,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:21:31" (1/3) ... [2020-09-04 15:21:33,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9582ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:21:33, skipping insertion in model container [2020-09-04 15:21:33,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:21:32" (2/3) ... [2020-09-04 15:21:33,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9582ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:21:33, skipping insertion in model container [2020-09-04 15:21:33,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:21:33" (3/3) ... [2020-09-04 15:21:33,742 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c [2020-09-04 15:21:33,753 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:21:33,767 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:21:33,787 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:21:33,810 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:21:33,810 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:21:33,810 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:21:33,810 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:21:33,810 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:21:33,811 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:21:33,811 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:21:33,811 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:21:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-09-04 15:21:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:21:33,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:21:33,861 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] [2020-09-04 15:21:33,861 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:21:33,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:21:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1134805363, now seen corresponding path program 1 times [2020-09-04 15:21:33,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:21:33,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524698079] [2020-09-04 15:21:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:21:33,956 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:21:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:34,685 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:21:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:21:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:34,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:21:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:34,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:21:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:34,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:21:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:34,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:21:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:21:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:34,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:21:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:21:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:21:34,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524698079] [2020-09-04 15:21:34,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:21:34,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:21:34,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198482416] [2020-09-04 15:21:34,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:21:34,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:21:34,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:21:34,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:21:34,990 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 3 states. [2020-09-04 15:21:36,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:21:36,169 INFO L93 Difference]: Finished difference Result 365 states and 438 transitions. [2020-09-04 15:21:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:21:36,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:21:36,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:21:36,191 INFO L225 Difference]: With dead ends: 365 [2020-09-04 15:21:36,191 INFO L226 Difference]: Without dead ends: 238 [2020-09-04 15:21:36,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:21:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-04 15:21:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 201. [2020-09-04 15:21:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-04 15:21:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 215 transitions. [2020-09-04 15:21:36,316 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 215 transitions. Word has length 153 [2020-09-04 15:21:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:21:36,318 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 215 transitions. [2020-09-04 15:21:36,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:21:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 215 transitions. [2020-09-04 15:21:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:21:36,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:21:36,323 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] [2020-09-04 15:21:36,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:21:36,324 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:21:36,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:21:36,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2008587575, now seen corresponding path program 1 times [2020-09-04 15:21:36,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:21:36,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823343143] [2020-09-04 15:21:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:21:36,328 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:21:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:36,760 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:21:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:21:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:21:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:36,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:21:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:36,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:21:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:21:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:36,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:21:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:36,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:21:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:21:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:21:36,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823343143] [2020-09-04 15:21:36,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:21:36,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:21:36,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162332596] [2020-09-04 15:21:36,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:21:36,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:21:36,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:21:36,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:21:36,884 INFO L87 Difference]: Start difference. First operand 201 states and 215 transitions. Second operand 4 states. [2020-09-04 15:21:37,633 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:21:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:21:38,181 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2020-09-04 15:21:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:21:38,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:21:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:21:38,185 INFO L225 Difference]: With dead ends: 282 [2020-09-04 15:21:38,185 INFO L226 Difference]: Without dead ends: 221 [2020-09-04 15:21:38,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:21:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-04 15:21:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-09-04 15:21:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-04 15:21:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 202 transitions. [2020-09-04 15:21:38,242 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 202 transitions. Word has length 154 [2020-09-04 15:21:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:21:38,243 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 202 transitions. [2020-09-04 15:21:38,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:21:38,243 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 202 transitions. [2020-09-04 15:21:38,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 15:21:38,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:21:38,246 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] [2020-09-04 15:21:38,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:21:38,247 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:21:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:21:38,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1539733420, now seen corresponding path program 1 times [2020-09-04 15:21:38,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:21:38,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329800716] [2020-09-04 15:21:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:21:38,250 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:21:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:38,641 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:21:38,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:21:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:21:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:38,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:21:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:21:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:38,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:21:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:38,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:21:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:38,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:21:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:38,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 15:21:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:21:38,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329800716] [2020-09-04 15:21:38,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:21:38,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:21:38,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207787778] [2020-09-04 15:21:38,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:21:38,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:21:38,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:21:38,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:21:38,890 INFO L87 Difference]: Start difference. First operand 191 states and 202 transitions. Second operand 9 states. [2020-09-04 15:21:39,553 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:21:39,874 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:21:40,160 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:21:40,472 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:21:40,774 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:21:41,078 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:21:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:21:42,126 INFO L93 Difference]: Finished difference Result 302 states and 338 transitions. [2020-09-04 15:21:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:21:42,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-04 15:21:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:21:42,130 INFO L225 Difference]: With dead ends: 302 [2020-09-04 15:21:42,130 INFO L226 Difference]: Without dead ends: 221 [2020-09-04 15:21:42,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:21:42,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-04 15:21:42,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-09-04 15:21:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-04 15:21:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2020-09-04 15:21:42,182 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 163 [2020-09-04 15:21:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:21:42,182 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 201 transitions. [2020-09-04 15:21:42,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:21:42,183 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 201 transitions. [2020-09-04 15:21:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:21:42,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:21:42,185 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] [2020-09-04 15:21:42,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:21:42,186 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:21:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:21:42,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1213081293, now seen corresponding path program 1 times [2020-09-04 15:21:42,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:21:42,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367200591] [2020-09-04 15:21:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:21:42,189 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:21:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,632 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:21:42,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:21:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:21:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:21:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:21:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:21:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:21:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:21:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:21:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:21:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:21:42,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367200591] [2020-09-04 15:21:42,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:21:42,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:21:42,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433090046] [2020-09-04 15:21:42,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:21:42,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:21:42,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:21:42,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:21:42,786 INFO L87 Difference]: Start difference. First operand 191 states and 201 transitions. Second operand 8 states. [2020-09-04 15:21:43,285 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:21:44,539 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:21:44,855 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:21:45,184 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:21:45,521 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:21:45,837 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:21:46,146 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:21:46,436 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:21:46,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:21:46,750 INFO L93 Difference]: Finished difference Result 368 states and 417 transitions. [2020-09-04 15:21:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:21:46,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-09-04 15:21:46,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:21:46,755 INFO L225 Difference]: With dead ends: 368 [2020-09-04 15:21:46,755 INFO L226 Difference]: Without dead ends: 287 [2020-09-04 15:21:46,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:21:46,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-04 15:21:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 262. [2020-09-04 15:21:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-04 15:21:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 284 transitions. [2020-09-04 15:21:46,844 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 284 transitions. Word has length 166 [2020-09-04 15:21:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:21:46,845 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 284 transitions. [2020-09-04 15:21:46,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:21:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 284 transitions. [2020-09-04 15:21:46,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-04 15:21:46,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:21:46,848 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] [2020-09-04 15:21:46,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:21:46,848 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:21:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:21:46,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1773237520, now seen corresponding path program 1 times [2020-09-04 15:21:46,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:21:46,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81447359] [2020-09-04 15:21:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:21:46,852 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:21:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,240 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:21:47,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:21:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:21:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:21:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:21:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:21:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 15:21:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:21:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:21:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:21:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:21:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:21:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:21:47,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81447359] [2020-09-04 15:21:47,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:21:47,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 15:21:47,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051216448] [2020-09-04 15:21:47,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 15:21:47,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:21:47,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 15:21:47,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:21:47,451 INFO L87 Difference]: Start difference. First operand 262 states and 284 transitions. Second operand 5 states. [2020-09-04 15:21:47,945 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:21:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:21:48,519 INFO L93 Difference]: Finished difference Result 361 states and 402 transitions. [2020-09-04 15:21:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 15:21:48,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-04 15:21:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:21:48,522 INFO L225 Difference]: With dead ends: 361 [2020-09-04 15:21:48,522 INFO L226 Difference]: Without dead ends: 269 [2020-09-04 15:21:48,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:21:48,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-04 15:21:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2020-09-04 15:21:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-09-04 15:21:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 263 transitions. [2020-09-04 15:21:48,621 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 263 transitions. Word has length 171 [2020-09-04 15:21:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:21:48,622 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 263 transitions. [2020-09-04 15:21:48,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 15:21:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 263 transitions. [2020-09-04 15:21:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-04 15:21:48,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:21:48,625 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] [2020-09-04 15:21:48,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:21:48,625 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:21:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:21:48,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1613053112, now seen corresponding path program 1 times [2020-09-04 15:21:48,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:21:48,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358702130] [2020-09-04 15:21:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:21:48,629 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:21:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:21:48,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:21:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:21:48,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:21:48,998 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:21:48,998 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:21:49,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:21:49,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:21:49 BoogieIcfgContainer [2020-09-04 15:21:49,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:21:49,049 INFO L168 Benchmark]: Toolchain (without parser) took 17245.46 ms. Allocated memory was 140.5 MB in the beginning and 514.3 MB in the end (delta: 373.8 MB). Free memory was 101.7 MB in the beginning and 116.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 359.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:21:49,052 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:21:49,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.97 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 175.4 MB in the end (delta: -73.9 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:21:49,054 INFO L168 Benchmark]: Boogie Preprocessor took 103.42 ms. Allocated memory is still 205.5 MB. Free memory was 175.4 MB in the beginning and 170.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:21:49,054 INFO L168 Benchmark]: RCFGBuilder took 1193.22 ms. Allocated memory was 205.5 MB in the beginning and 237.0 MB in the end (delta: 31.5 MB). Free memory was 170.6 MB in the beginning and 182.8 MB in the end (delta: -12.2 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:21:49,055 INFO L168 Benchmark]: TraceAbstraction took 15311.33 ms. Allocated memory was 237.0 MB in the beginning and 514.3 MB in the end (delta: 277.3 MB). Free memory was 182.8 MB in the beginning and 116.4 MB in the end (delta: 66.4 MB). Peak memory consumption was 343.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:21:49,058 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.97 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 175.4 MB in the end (delta: -73.9 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.42 ms. Allocated memory is still 205.5 MB. Free memory was 175.4 MB in the beginning and 170.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1193.22 ms. Allocated memory was 205.5 MB in the beginning and 237.0 MB in the end (delta: 31.5 MB). Free memory was 170.6 MB in the beginning and 182.8 MB in the end (delta: -12.2 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15311.33 ms. Allocated memory was 237.0 MB in the beginning and 514.3 MB in the end (delta: 277.3 MB). Free memory was 182.8 MB in the beginning and 116.4 MB in the end (delta: 66.4 MB). Peak memory consumption was 343.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 302]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int pumpRunning = 0; [L49] int systemActive = 1; [L307] int cleanupTimeShifts = 4; [L403] int waterLevel = 1; [L404] int methaneLevelCritical = 0; [L652] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L380] int retValue_acc ; [L381] int tmp ; [L385] FCALL select_helpers() [L386] FCALL select_features() [L387] CALL, EXPR valid_product() [L253] int retValue_acc ; [L256] retValue_acc = 1 [L257] return (retValue_acc); [L387] RET, EXPR valid_product() [L387] tmp = valid_product() [L389] COND TRUE \read(tmp) [L391] FCALL setup() [L392] CALL runTest() [L374] CALL test() [L160] int splverifierCounter ; [L161] int tmp ; [L162] int tmp___0 ; [L163] int tmp___1 ; [L164] int tmp___2 ; [L167] splverifierCounter = 0 [L169] COND TRUE 1 [L171] COND TRUE splverifierCounter < 4 [L177] tmp = __VERIFIER_nondet_int() [L179] COND TRUE \read(tmp) [L181] CALL waterRise() [L421] COND TRUE waterLevel < 2 [L422] waterLevel = waterLevel + 1 [L181] RET waterRise() [L187] tmp___0 = __VERIFIER_nondet_int() [L189] COND FALSE !(\read(tmp___0)) [L197] tmp___2 = __VERIFIER_nondet_int() [L199] COND TRUE \read(tmp___2) [L212] CALL timeShift() [L56] COND FALSE !(\read(pumpRunning)) [L63] COND TRUE \read(systemActive) [L65] FCALL processEnvironment() [L71] CALL __utac_acc__Specification3_spec__1() [L265] int tmp ; [L266] int tmp___0 ; [L267] int tmp___1 ; [L271] CALL, EXPR isMethaneLevelCritical() [L442] int retValue_acc ; [L445] retValue_acc = methaneLevelCritical [L446] return (retValue_acc); [L271] RET, EXPR isMethaneLevelCritical() [L271] tmp = isMethaneLevelCritical() [L273] COND FALSE !(\read(tmp)) [L277] CALL, EXPR getWaterLevel() [L474] int retValue_acc ; [L477] retValue_acc = waterLevel [L478] return (retValue_acc); [L277] RET, EXPR getWaterLevel() [L277] tmp___0 = getWaterLevel() [L279] COND TRUE tmp___0 == 2 [L281] CALL, EXPR isPumpRunning() [L111] int retValue_acc ; [L114] retValue_acc = pumpRunning [L115] return (retValue_acc); [L281] RET, EXPR isPumpRunning() [L281] tmp___1 = isPumpRunning() [L283] COND FALSE !(\read(tmp___1)) [L287] CALL __automaton_fail() [L302] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 34 procedures, 578 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 909 SDtfs, 958 SDslu, 1144 SDs, 0 SdLazy, 1888 SolverSat, 280 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 143 StatesRemovedByMinimization, 5 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...