/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:23:28,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:23:28,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:23:28,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:23:28,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:23:28,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:23:28,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:23:28,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:23:28,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:23:28,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:23:28,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:23:28,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:23:28,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:23:28,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:23:28,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:23:28,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:23:28,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:23:28,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:23:28,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:23:28,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:23:28,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:23:28,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:23:28,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:23:28,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:23:28,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:23:28,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:23:28,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:23:28,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:23:28,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:23:28,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:23:28,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:23:28,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:23:28,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:23:28,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:23:28,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:23:28,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:23:28,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:23:28,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:23:28,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:23:28,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:23:28,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:23:28,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:23:28,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:23:28,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:23:28,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:23:28,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:23:28,931 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:23:28,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:23:28,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:23:28,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:23:28,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:23:28,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:23:28,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:23:28,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:23:28,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:23:28,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:23:28,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:23:28,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:23:28,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:23:28,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:23:28,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:23:28,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:23:28,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:23:28,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:23:28,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:23:28,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:23:28,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:23:28,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:23:28,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:23:28,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:23:28,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:23:28,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:23:29,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:23:29,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:23:29,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:23:29,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:23:29,457 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:23:29,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-09-24 17:23:29,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b24e7649/20693ec8db0b464b825a3c9e4aebd5bc/FLAG3b173fd82 [2020-09-24 17:23:30,162 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:23:30,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-09-24 17:23:30,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b24e7649/20693ec8db0b464b825a3c9e4aebd5bc/FLAG3b173fd82 [2020-09-24 17:23:30,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b24e7649/20693ec8db0b464b825a3c9e4aebd5bc [2020-09-24 17:23:30,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:23:30,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:23:30,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:23:30,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:23:30,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:23:30,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:23:30" (1/1) ... [2020-09-24 17:23:30,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366b14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:30, skipping insertion in model container [2020-09-24 17:23:30,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:23:30" (1/1) ... [2020-09-24 17:23:30,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:23:30,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:23:30,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:23:30,983 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:23:31,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:23:31,116 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:23:31,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31 WrapperNode [2020-09-24 17:23:31,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:23:31,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:23:31,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:23:31,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:23:31,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31" (1/1) ... [2020-09-24 17:23:31,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31" (1/1) ... [2020-09-24 17:23:31,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31" (1/1) ... [2020-09-24 17:23:31,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31" (1/1) ... [2020-09-24 17:23:31,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31" (1/1) ... [2020-09-24 17:23:31,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31" (1/1) ... [2020-09-24 17:23:31,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31" (1/1) ... [2020-09-24 17:23:31,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:23:31,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:23:31,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:23:31,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:23:31,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31" (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 [2020-09-24 17:23:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:23:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:23:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:23:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-09-24 17:23:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-09-24 17:23:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-09-24 17:23:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-09-24 17:23:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-09-24 17:23:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-09-24 17:23:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-09-24 17:23:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-09-24 17:23:31,287 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-24 17:23:31,287 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-09-24 17:23:31,287 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-09-24 17:23:31,287 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-09-24 17:23:31,287 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-09-24 17:23:31,288 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-09-24 17:23:31,288 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 17:23:31,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:23:31,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-09-24 17:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 17:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 17:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 17:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 17:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 17:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-09-24 17:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-09-24 17:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-09-24 17:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-09-24 17:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-09-24 17:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-09-24 17:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-09-24 17:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-09-24 17:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 17:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-09-24 17:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-09-24 17:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-09-24 17:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-09-24 17:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-09-24 17:23:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 17:23:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:23:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:23:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:23:32,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:23:32,412 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:23:32,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:23:32 BoogieIcfgContainer [2020-09-24 17:23:32,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:23:32,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:23:32,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:23:32,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:23:32,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:23:30" (1/3) ... [2020-09-24 17:23:32,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b74bffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:23:32, skipping insertion in model container [2020-09-24 17:23:32,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:31" (2/3) ... [2020-09-24 17:23:32,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b74bffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:23:32, skipping insertion in model container [2020-09-24 17:23:32,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:23:32" (3/3) ... [2020-09-24 17:23:32,432 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-09-24 17:23:32,445 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:23:32,457 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:23:32,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:23:32,520 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:23:32,520 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:23:32,520 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:23:32,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:23:32,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:23:32,521 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:23:32,521 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:23:32,521 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:23:32,557 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states. [2020-09-24 17:23:32,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 17:23:32,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:32,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:32,585 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:32,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:32,594 INFO L82 PathProgramCache]: Analyzing trace with hash -182402980, now seen corresponding path program 1 times [2020-09-24 17:23:32,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:32,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208894328] [2020-09-24 17:23:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:33,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:33,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:36,899 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:36,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 17:23:36,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 17:23:36,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3941 [2020-09-24 17:23:36,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-24 17:23:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:23:37,209 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 17:23:37,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:23:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,276 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 17:23:37,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 17:23:37,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 17:23:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,313 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:37,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:23:37,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:23:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,326 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:37,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:37,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 17:23:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,379 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:23:37,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:23:37,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:23:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,418 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:37,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:23:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 17:23:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:23:37,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:23:37,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 17:23:37,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 17:23:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:23:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,586 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:37,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:23:37,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 17:23:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,736 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:23:37,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:23:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 17:23:37,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 17:23:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:23:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:37,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:23:37,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:23:37,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208894328] [2020-09-24 17:23:37,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:23:37,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 17:23:37,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233754414] [2020-09-24 17:23:37,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:23:37,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:23:37,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:23:37,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:23:37,919 INFO L87 Difference]: Start difference. First operand 574 states. Second operand 9 states. [2020-09-24 17:23:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:23:40,753 INFO L93 Difference]: Finished difference Result 1013 states and 1262 transitions. [2020-09-24 17:23:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 17:23:40,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2020-09-24 17:23:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:23:40,777 INFO L225 Difference]: With dead ends: 1013 [2020-09-24 17:23:40,777 INFO L226 Difference]: Without dead ends: 562 [2020-09-24 17:23:40,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:23:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-09-24 17:23:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-09-24 17:23:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-24 17:23:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 667 transitions. [2020-09-24 17:23:40,901 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 667 transitions. Word has length 228 [2020-09-24 17:23:40,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:23:40,904 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 667 transitions. [2020-09-24 17:23:40,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:23:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 667 transitions. [2020-09-24 17:23:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 17:23:40,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:40,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:40,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:23:40,913 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:40,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:40,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1704223652, now seen corresponding path program 1 times [2020-09-24 17:23:40,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:40,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295021946] [2020-09-24 17:23:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,333 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:43,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 17:23:43,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:23:43,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2373 [2020-09-24 17:23:43,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:23:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-09-24 17:23:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:23:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 17:23:43,639 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 17:23:43,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:23:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:43,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 17:23:43,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 17:23:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 17:23:43,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 17:23:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:43,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:43,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:43,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:43,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:43,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:23:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,735 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:43,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:43,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:43,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:43,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:43,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:43,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:43,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 17:23:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:43,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,785 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:43,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:23:43,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 17:23:43,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:43,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:43,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:23:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,820 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:43,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:43,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:43,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:43,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:43,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 17:23:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,891 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:43,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:23:43,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:43,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 17:23:43,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:43,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:43,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:23:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,943 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:43,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:43,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:43,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:43,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:43,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:43,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 17:23:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:43,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:44,014 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:44,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:23:44,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 17:23:44,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:44,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:44,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:23:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:44,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:44,051 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:44,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:44,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:23:44,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:44,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:23:44,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295021946] [2020-09-24 17:23:44,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:23:44,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 17:23:44,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486823742] [2020-09-24 17:23:44,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:23:44,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:23:44,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:23:44,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:23:44,109 INFO L87 Difference]: Start difference. First operand 562 states and 667 transitions. Second operand 11 states. [2020-09-24 17:23:46,425 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-24 17:23:46,661 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-09-24 17:23:47,742 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-24 17:23:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:23:48,465 INFO L93 Difference]: Finished difference Result 990 states and 1194 transitions. [2020-09-24 17:23:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 17:23:48,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2020-09-24 17:23:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:23:48,484 INFO L225 Difference]: With dead ends: 990 [2020-09-24 17:23:48,485 INFO L226 Difference]: Without dead ends: 569 [2020-09-24 17:23:48,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=201, Invalid=399, Unknown=0, NotChecked=0, Total=600 [2020-09-24 17:23:48,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-09-24 17:23:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2020-09-24 17:23:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-09-24 17:23:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 671 transitions. [2020-09-24 17:23:48,562 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 671 transitions. Word has length 228 [2020-09-24 17:23:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:23:48,563 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 671 transitions. [2020-09-24 17:23:48,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:23:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 671 transitions. [2020-09-24 17:23:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-09-24 17:23:48,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:48,570 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:48,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:23:48,571 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:48,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1715458180, now seen corresponding path program 1 times [2020-09-24 17:23:48,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:48,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578575460] [2020-09-24 17:23:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:52,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:07,898 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:07,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-09-24 17:24:07,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:24:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19279 [2020-09-24 17:24:07,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:24:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 17:24:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:24:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:24:08,192 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 17:24:08,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:24:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 17:24:08,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 17:24:08,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 17:24:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,287 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:24:08,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:24:08,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:24:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 17:24:08,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:24:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,327 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:24:08,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:24:08,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:24:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:24:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:24:08,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 17:24:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,432 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:24:08,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 17:24:08,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 17:24:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:24:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,479 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:24:08,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:24:08,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 17:24:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:24:08,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 17:24:08,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 17:24:08,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:24:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,620 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:24:08,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:24:08,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 17:24:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,714 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:24:08,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 17:24:08,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 17:24:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:24:08,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:24:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,764 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:24:08,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:24:08,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-24 17:24:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:24:08,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 17:24:08,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 17:24:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 17:24:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,855 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:24:08,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:24:08,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 17:24:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,894 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:24:08,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:24:08,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:24:08,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-09-24 17:24:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:08,909 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:08,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:24:08,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:24:08,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:24:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:08,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:24:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:24:09,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578575460] [2020-09-24 17:24:09,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:24:09,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:24:09,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648577700] [2020-09-24 17:24:09,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:24:09,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:24:09,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:24:09,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:24:09,006 INFO L87 Difference]: Start difference. First operand 567 states and 671 transitions. Second operand 16 states. [2020-09-24 17:24:09,844 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-24 17:24:10,210 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-24 17:24:10,431 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 17:24:14,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:24:14,461 INFO L93 Difference]: Finished difference Result 1016 states and 1212 transitions. [2020-09-24 17:24:14,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 17:24:14,461 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 301 [2020-09-24 17:24:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:24:14,467 INFO L225 Difference]: With dead ends: 1016 [2020-09-24 17:24:14,467 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 17:24:14,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 17:24:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 17:24:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2020-09-24 17:24:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-09-24 17:24:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 647 transitions. [2020-09-24 17:24:14,504 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 647 transitions. Word has length 301 [2020-09-24 17:24:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:24:14,505 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 647 transitions. [2020-09-24 17:24:14,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:24:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 647 transitions. [2020-09-24 17:24:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-09-24 17:24:14,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:24:14,511 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:24:14,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:24:14,511 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:24:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:24:14,512 INFO L82 PathProgramCache]: Analyzing trace with hash 960210052, now seen corresponding path program 1 times [2020-09-24 17:24:14,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:24:14,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472892487] [2020-09-24 17:24:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:24:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:15,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking...