/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:12:41,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:12:41,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:12:41,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:12:41,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:12:41,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:12:41,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:12:41,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:12:41,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:12:41,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:12:41,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:12:41,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:12:41,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:12:41,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:12:41,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:12:41,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:12:41,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:12:41,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:12:41,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:12:41,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:12:41,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:12:41,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:12:41,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:12:41,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:12:41,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:12:41,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:12:41,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:12:41,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:12:41,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:12:41,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:12:41,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:12:41,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:12:41,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:12:41,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:12:41,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:12:41,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:12:41,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:12:41,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:12:41,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:12:41,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:12:41,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:12:41,574 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 [2020-09-25 09:12:41,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:12:41,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:12:41,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:12:41,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:12:41,602 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:12:41,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:12:41,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:12:41,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:12:41,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:12:41,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:12:41,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:12:41,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:12:41,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:12:41,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:12:41,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:12:41,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:12:41,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:12:41,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:12:41,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:12:41,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:12:41,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:12:41,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:12:41,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:12:41,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:12:41,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:12:41,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:12:41,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:12:41,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:12:41,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:12:41,608 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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:12:42,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:12:42,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:12:42,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:12:42,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:12:42,145 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:12:42,146 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-09-25 09:12:42,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc1b9d66/187142d5cb4146cda085137baa817796/FLAG59a20a0fd [2020-09-25 09:12:42,817 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:12:42,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-09-25 09:12:42,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc1b9d66/187142d5cb4146cda085137baa817796/FLAG59a20a0fd [2020-09-25 09:12:43,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc1b9d66/187142d5cb4146cda085137baa817796 [2020-09-25 09:12:43,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:12:43,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:12:43,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:12:43,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:12:43,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:12:43,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:12:43" (1/1) ... [2020-09-25 09:12:43,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77dd261d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43, skipping insertion in model container [2020-09-25 09:12:43,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:12:43" (1/1) ... [2020-09-25 09:12:43,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:12:43,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:12:43,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:12:43,486 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:12:43,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:12:43,557 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:12:43,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43 WrapperNode [2020-09-25 09:12:43,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:12:43,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:12:43,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:12:43,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:12:43,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43" (1/1) ... [2020-09-25 09:12:43,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43" (1/1) ... [2020-09-25 09:12:43,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43" (1/1) ... [2020-09-25 09:12:43,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43" (1/1) ... [2020-09-25 09:12:43,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43" (1/1) ... [2020-09-25 09:12:43,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43" (1/1) ... [2020-09-25 09:12:43,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43" (1/1) ... [2020-09-25 09:12:43,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:12:43,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:12:43,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:12:43,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:12:43,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43" (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 [2020-09-25 09:12:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:12:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:12:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-25 09:12:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-09-25 09:12:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-09-25 09:12:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-09-25 09:12:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-09-25 09:12:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-09-25 09:12:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-25 09:12:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-25 09:12:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-25 09:12:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-25 09:12:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-25 09:12:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-25 09:12:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:12:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:12:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:12:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-25 09:12:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-09-25 09:12:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-09-25 09:12:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-09-25 09:12:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-09-25 09:12:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-09-25 09:12:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-25 09:12:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-25 09:12:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-25 09:12:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-25 09:12:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-25 09:12:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-25 09:12:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:12:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:12:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:12:44,320 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:12:44,321 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 09:12:44,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:12:44 BoogieIcfgContainer [2020-09-25 09:12:44,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:12:44,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:12:44,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:12:44,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:12:44,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:12:43" (1/3) ... [2020-09-25 09:12:44,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4946df3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:12:44, skipping insertion in model container [2020-09-25 09:12:44,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:43" (2/3) ... [2020-09-25 09:12:44,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4946df3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:12:44, skipping insertion in model container [2020-09-25 09:12:44,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:12:44" (3/3) ... [2020-09-25 09:12:44,337 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2020-09-25 09:12:44,350 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:12:44,361 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:12:44,385 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:12:44,427 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:12:44,427 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:12:44,427 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:12:44,427 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:12:44,428 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:12:44,428 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:12:44,428 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:12:44,428 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:12:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-09-25 09:12:44,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 09:12:44,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:44,477 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] [2020-09-25 09:12:44,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:44,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1485288606, now seen corresponding path program 1 times [2020-09-25 09:12:44,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:44,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118683677] [2020-09-25 09:12:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:46,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:49,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:49,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 09:12:49,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:12:49,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 09:12:49,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:49,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:12:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 09:12:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:12:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:12:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:49,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:49,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:12:49,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:49,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:49,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:50,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 09:12:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:50,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:50,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:50,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:12:50,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:50,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:12:50,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:50,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:50,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:50,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:50,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:12:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:50,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:50,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:50,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:12:50,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:12:50,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:50,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:50,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:50,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 09:12:50,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:12:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:50,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:50,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:50,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:12:50,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:12:50,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:12:50,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:50,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:50,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:12:50,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 09:12:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:50,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:50,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:12:50,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:50,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:12:50,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:50,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 09:12:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 09:12:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:12:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:50,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:50,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:12:50,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:12:50,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:50,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:50,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 09:12:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:50,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:50,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:12:50,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:50,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:50,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:50,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:12:50,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118683677] [2020-09-25 09:12:50,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:12:50,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 09:12:50,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496403656] [2020-09-25 09:12:50,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:12:50,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:50,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:12:50,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:12:50,249 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 6 states. [2020-09-25 09:12:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:51,765 INFO L93 Difference]: Finished difference Result 573 states and 771 transitions. [2020-09-25 09:12:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:12:51,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-09-25 09:12:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:51,789 INFO L225 Difference]: With dead ends: 573 [2020-09-25 09:12:51,790 INFO L226 Difference]: Without dead ends: 416 [2020-09-25 09:12:51,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:12:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-09-25 09:12:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 305. [2020-09-25 09:12:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-09-25 09:12:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 366 transitions. [2020-09-25 09:12:51,914 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 366 transitions. Word has length 109 [2020-09-25 09:12:51,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:51,915 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 366 transitions. [2020-09-25 09:12:51,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:12:51,915 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 366 transitions. [2020-09-25 09:12:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 09:12:51,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:51,921 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] [2020-09-25 09:12:51,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:12:51,922 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:51,922 INFO L82 PathProgramCache]: Analyzing trace with hash -388258462, now seen corresponding path program 1 times [2020-09-25 09:12:51,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:51,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958963803] [2020-09-25 09:12:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:55,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:55,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 09:12:55,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:12:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3120 [2020-09-25 09:12:55,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:55,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 09:12:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:12:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:55,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:55,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:55,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:12:55,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:12:55,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:55,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:55,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:55,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 09:12:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:55,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:55,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:55,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:12:55,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:12:55,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:55,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:12:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:55,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:12:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:55,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:55,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:12:55,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:55,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:55,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:55,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:12:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:12:55,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:55,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:12:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:55,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:55,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:12:55,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:55,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:55,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:55,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 09:12:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:55,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:55,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 09:12:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:55,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:55,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:12:55,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:55,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 09:12:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:12:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:55,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:55,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:55,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:12:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:55,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:55,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:55,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 09:12:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:55,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:55,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:12:55,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:55,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:55,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:55,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:55,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:55,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:55,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:12:55,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958963803] [2020-09-25 09:12:55,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:12:55,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:12:55,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622507457] [2020-09-25 09:12:55,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:12:55,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:55,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:12:55,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:12:55,318 INFO L87 Difference]: Start difference. First operand 305 states and 366 transitions. Second operand 7 states. [2020-09-25 09:12:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:56,474 INFO L93 Difference]: Finished difference Result 663 states and 819 transitions. [2020-09-25 09:12:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:12:56,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-09-25 09:12:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:56,480 INFO L225 Difference]: With dead ends: 663 [2020-09-25 09:12:56,480 INFO L226 Difference]: Without dead ends: 402 [2020-09-25 09:12:56,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:12:56,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-09-25 09:12:56,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 299. [2020-09-25 09:12:56,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-09-25 09:12:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 358 transitions. [2020-09-25 09:12:56,538 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 358 transitions. Word has length 110 [2020-09-25 09:12:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:56,539 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 358 transitions. [2020-09-25 09:12:56,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:12:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 358 transitions. [2020-09-25 09:12:56,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 09:12:56,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:56,548 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] [2020-09-25 09:12:56,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:12:56,548 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:56,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:56,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1991457360, now seen corresponding path program 1 times [2020-09-25 09:12:56,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:56,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259844907] [2020-09-25 09:12:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:56,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:57,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:00,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:00,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:13:00,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:13:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4163 [2020-09-25 09:13:00,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:00,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-25 09:13:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:13:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:00,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:00,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:00,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:13:00,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:13:00,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:00,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:00,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 09:13:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:00,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:00,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:13:00,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:00,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:13:00,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:00,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:00,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:00,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:00,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:13:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:00,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:00,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:00,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:00,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:00,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:00,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:00,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:13:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:00,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:00,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:00,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:00,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:00,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 09:13:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:00,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:00,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:13:00,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:01,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:13:01,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:01,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:01,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:01,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:01,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:13:01,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 09:13:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:01,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:01,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:13:01,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:01,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:13:01,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:01,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 09:13:01,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:13:01,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:13:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:01,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:01,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:01,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:13:01,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:01,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 09:13:01,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:01,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 09:13:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:01,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:01,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:01,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:01,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:13:01,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:01,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:01,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:13:01,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259844907] [2020-09-25 09:13:01,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:01,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:13:01,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563567533] [2020-09-25 09:13:01,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:13:01,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:01,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:13:01,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:13:01,100 INFO L87 Difference]: Start difference. First operand 299 states and 358 transitions. Second operand 8 states. [2020-09-25 09:13:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:03,089 INFO L93 Difference]: Finished difference Result 898 states and 1154 transitions. [2020-09-25 09:13:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 09:13:03,093 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-09-25 09:13:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:03,098 INFO L225 Difference]: With dead ends: 898 [2020-09-25 09:13:03,098 INFO L226 Difference]: Without dead ends: 643 [2020-09-25 09:13:03,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:13:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-09-25 09:13:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 479. [2020-09-25 09:13:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 09:13:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 570 transitions. [2020-09-25 09:13:03,151 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 570 transitions. Word has length 122 [2020-09-25 09:13:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:03,152 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 570 transitions. [2020-09-25 09:13:03,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:13:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 570 transitions. [2020-09-25 09:13:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-25 09:13:03,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:03,156 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] [2020-09-25 09:13:03,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:13:03,156 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash -116221757, now seen corresponding path program 1 times [2020-09-25 09:13:03,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:03,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899745347] [2020-09-25 09:13:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:05,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:05,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 09:13:05,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:13:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1981 [2020-09-25 09:13:05,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:05,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:13:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 09:13:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:13:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:05,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:05,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:05,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:05,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:13:05,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:05,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:13:05,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:05,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:13:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:13:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:05,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 09:13:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:05,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:13:05,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:13:05,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:05,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:13:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:13:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:05,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:05,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:05,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:13:05,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:05,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:05,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:13:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:05,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:05,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:05,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:13:05,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:05,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:05,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:05,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:05,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:05,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:05,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 09:13:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:05,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:05,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:13:05,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:13:05,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:05,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:13:05,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:13:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:05,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:05,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:05,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:05,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:05,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:05,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:05,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:05,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 09:13:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:05,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:05,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:05,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:05,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:05,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:13:05,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899745347] [2020-09-25 09:13:05,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:05,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 09:13:05,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891117042] [2020-09-25 09:13:05,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:13:05,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:05,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:13:05,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:13:05,429 INFO L87 Difference]: Start difference. First operand 479 states and 570 transitions. Second operand 9 states. [2020-09-25 09:13:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:07,818 INFO L93 Difference]: Finished difference Result 1243 states and 1549 transitions. [2020-09-25 09:13:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 09:13:07,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-09-25 09:13:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:07,827 INFO L225 Difference]: With dead ends: 1243 [2020-09-25 09:13:07,828 INFO L226 Difference]: Without dead ends: 1240 [2020-09-25 09:13:07,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 09:13:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-09-25 09:13:07,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 740. [2020-09-25 09:13:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-09-25 09:13:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 883 transitions. [2020-09-25 09:13:07,902 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 883 transitions. Word has length 113 [2020-09-25 09:13:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:07,903 INFO L479 AbstractCegarLoop]: Abstraction has 740 states and 883 transitions. [2020-09-25 09:13:07,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:13:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 883 transitions. [2020-09-25 09:13:07,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 09:13:07,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:07,905 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] [2020-09-25 09:13:07,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:13:07,905 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:07,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:07,906 INFO L82 PathProgramCache]: Analyzing trace with hash 691782663, now seen corresponding path program 1 times [2020-09-25 09:13:07,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:07,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944886146] [2020-09-25 09:13:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:08,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 09:13:08,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-25 09:13:08,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:08,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:13:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 09:13:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:13:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:08,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:08,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:13:08,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:08,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:13:08,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:08,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:08,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 09:13:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:08,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:13:08,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:13:08,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:08,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 09:13:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:13:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:08,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:08,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:13:08,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:08,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:08,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:13:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:13:08,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:08,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:08,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 09:13:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:08,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:13:08,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:08,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:13:08,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:08,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 09:13:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:08,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:13:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:08,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:08,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:08,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:08,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:08,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:08,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 09:13:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:08,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:08,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:08,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:08,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:08,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:13:08,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944886146] [2020-09-25 09:13:08,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:08,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 09:13:08,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084230851] [2020-09-25 09:13:08,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:13:08,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:08,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:13:08,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:13:08,683 INFO L87 Difference]: Start difference. First operand 740 states and 883 transitions. Second operand 6 states. [2020-09-25 09:13:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:09,794 INFO L93 Difference]: Finished difference Result 1481 states and 1839 transitions. [2020-09-25 09:13:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:13:09,795 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-09-25 09:13:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:09,804 INFO L225 Difference]: With dead ends: 1481 [2020-09-25 09:13:09,804 INFO L226 Difference]: Without dead ends: 785 [2020-09-25 09:13:09,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:13:09,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-09-25 09:13:09,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 628. [2020-09-25 09:13:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-09-25 09:13:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 758 transitions. [2020-09-25 09:13:09,884 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 758 transitions. Word has length 114 [2020-09-25 09:13:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:09,885 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 758 transitions. [2020-09-25 09:13:09,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:13:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 758 transitions. [2020-09-25 09:13:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 09:13:09,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:09,890 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] [2020-09-25 09:13:09,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:13:09,891 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:09,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:09,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1908919484, now seen corresponding path program 1 times [2020-09-25 09:13:09,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:09,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672659852] [2020-09-25 09:13:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:09,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:10,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:10,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:11,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:11,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 09:13:11,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:13:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-09-25 09:13:11,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:11,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:11,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:11,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 09:13:11,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:13:11,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:11,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:11,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:11,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:13:11,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:11,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:11,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:11,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:11,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:11,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:11,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 09:13:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:11,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:11,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:13:11,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:11,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:13:11,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:11,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:13:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:11,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:11,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:11,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:11,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:11,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:13:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:11,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:11,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:11,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:13:11,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:11,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:11,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 09:13:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:11,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:11,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:13:11,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:13:11,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:11,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 09:13:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:13:11,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:11,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:13:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:11,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:11,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:11,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:11,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:11,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 09:13:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:11,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:11,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:11,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:11,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:13:11,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:11,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 09:13:11,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:13:11,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672659852] [2020-09-25 09:13:11,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:11,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:13:11,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885353668] [2020-09-25 09:13:11,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:13:11,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:11,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:13:11,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:13:11,591 INFO L87 Difference]: Start difference. First operand 628 states and 758 transitions. Second operand 7 states. [2020-09-25 09:13:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:13,358 INFO L93 Difference]: Finished difference Result 1788 states and 2282 transitions. [2020-09-25 09:13:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:13:13,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-09-25 09:13:13,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:13,370 INFO L225 Difference]: With dead ends: 1788 [2020-09-25 09:13:13,371 INFO L226 Difference]: Without dead ends: 1204 [2020-09-25 09:13:13,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:13:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2020-09-25 09:13:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 869. [2020-09-25 09:13:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2020-09-25 09:13:13,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1015 transitions. [2020-09-25 09:13:13,517 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1015 transitions. Word has length 114 [2020-09-25 09:13:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:13,519 INFO L479 AbstractCegarLoop]: Abstraction has 869 states and 1015 transitions. [2020-09-25 09:13:13,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:13:13,519 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1015 transitions. [2020-09-25 09:13:13,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 09:13:13,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:13,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:13:13,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:13:13,524 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:13,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1410977270, now seen corresponding path program 1 times [2020-09-25 09:13:13,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:13,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654513288] [2020-09-25 09:13:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 09:13:16,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:13:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2618 [2020-09-25 09:13:16,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 09:13:16,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:13:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:13:16,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:16,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 09:13:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:16,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:13:16,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:13:16,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:16,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:13:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:16,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:16,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:16,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:13:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:16,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:16,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:13:16,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:16,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 09:13:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:16,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:13:16,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:16,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:13:16,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:13:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 09:13:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:16,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:16,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:13:16,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:16,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:16,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:16,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-25 09:13:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:13:16,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:13:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 09:13:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 09:13:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:13:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:16,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:16,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:16,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 09:13:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:16,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:16,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:16,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:13:16,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:16,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:16,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 09:13:16,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654513288] [2020-09-25 09:13:16,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:16,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:13:16,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356293798] [2020-09-25 09:13:16,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:13:16,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:16,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:13:16,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:13:16,495 INFO L87 Difference]: Start difference. First operand 869 states and 1015 transitions. Second operand 7 states. [2020-09-25 09:13:17,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:17,991 INFO L93 Difference]: Finished difference Result 2326 states and 2839 transitions. [2020-09-25 09:13:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:13:17,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 09:13:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:18,007 INFO L225 Difference]: With dead ends: 2326 [2020-09-25 09:13:18,007 INFO L226 Difference]: Without dead ends: 1501 [2020-09-25 09:13:18,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:13:18,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2020-09-25 09:13:18,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1285. [2020-09-25 09:13:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1285 states. [2020-09-25 09:13:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1539 transitions. [2020-09-25 09:13:18,196 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1539 transitions. Word has length 148 [2020-09-25 09:13:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:18,197 INFO L479 AbstractCegarLoop]: Abstraction has 1285 states and 1539 transitions. [2020-09-25 09:13:18,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:13:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1539 transitions. [2020-09-25 09:13:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 09:13:18,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:18,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:13:18,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:13:18,207 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:18,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:18,207 INFO L82 PathProgramCache]: Analyzing trace with hash -60412102, now seen corresponding path program 1 times [2020-09-25 09:13:18,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:18,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13785253] [2020-09-25 09:13:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:18,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 09:13:21,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:13:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2767 [2020-09-25 09:13:21,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:13:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 09:13:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:13:21,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:13:21,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:21,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:21,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 09:13:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:13:21,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:13:21,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:21,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:21,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:21,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:13:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:21,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:21,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:21,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:13:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:21,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:13:21,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:21,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:21,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 09:13:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 09:13:21,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:13:21,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:21,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:21,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:13:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:13:21,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:21,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:21,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:21,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:13:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:21,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:21,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:21,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:21,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 09:13:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:21,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:21,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:21,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 09:13:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:13:21,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 09:13:21,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:13:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:13:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:21,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:21,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:13:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:13:21,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:13:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:13:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:21,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:21,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 09:13:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:21,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:21,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:21,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:21,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:13:21,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:21,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:21,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:21,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 09:13:21,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:21,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 09:13:21,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13785253] [2020-09-25 09:13:21,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:21,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 09:13:21,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049712981] [2020-09-25 09:13:21,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:13:21,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:21,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:13:21,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:13:21,364 INFO L87 Difference]: Start difference. First operand 1285 states and 1539 transitions. Second operand 10 states. [2020-09-25 09:13:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:22,762 INFO L93 Difference]: Finished difference Result 2444 states and 3064 transitions. [2020-09-25 09:13:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:13:22,762 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2020-09-25 09:13:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:22,777 INFO L225 Difference]: With dead ends: 2444 [2020-09-25 09:13:22,777 INFO L226 Difference]: Without dead ends: 1554 [2020-09-25 09:13:22,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-09-25 09:13:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2020-09-25 09:13:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1353. [2020-09-25 09:13:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2020-09-25 09:13:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1611 transitions. [2020-09-25 09:13:22,922 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1611 transitions. Word has length 161 [2020-09-25 09:13:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:22,924 INFO L479 AbstractCegarLoop]: Abstraction has 1353 states and 1611 transitions. [2020-09-25 09:13:22,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:13:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1611 transitions. [2020-09-25 09:13:22,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 09:13:22,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:22,932 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:13:22,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:13:22,933 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:22,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:22,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1284418505, now seen corresponding path program 1 times [2020-09-25 09:13:22,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:22,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457118830] [2020-09-25 09:13:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:23,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 09:13:24,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:13:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-09-25 09:13:24,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-09-25 09:13:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:13:24,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:24,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:13:24,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 09:13:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:13:24,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:13:24,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:24,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:13:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:24,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:13:24,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:24,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:13:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:13:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:24,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:13:24,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 09:13:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 09:13:24,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:13:24,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:24,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:13:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:13:24,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:13:24,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:24,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:24,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:13:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:24,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:24,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:24,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 09:13:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:24,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:13:24,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:24,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 09:13:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:13:24,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:13:24,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 09:13:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:13:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:13:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:13:24,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:13:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 09:13:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:13:24,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 09:13:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:13:24,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:13:24,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:13:24,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 09:13:24,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457118830] [2020-09-25 09:13:24,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:24,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:13:24,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753543696] [2020-09-25 09:13:24,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:13:24,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:24,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:13:24,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:13:24,710 INFO L87 Difference]: Start difference. First operand 1353 states and 1611 transitions. Second operand 8 states. [2020-09-25 09:13:27,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:27,116 INFO L93 Difference]: Finished difference Result 3751 states and 4985 transitions. [2020-09-25 09:13:27,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 09:13:27,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 161 [2020-09-25 09:13:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:27,134 INFO L225 Difference]: With dead ends: 3751 [2020-09-25 09:13:27,134 INFO L226 Difference]: Without dead ends: 2793 [2020-09-25 09:13:27,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:13:27,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2020-09-25 09:13:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2434. [2020-09-25 09:13:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2434 states. [2020-09-25 09:13:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3097 transitions. [2020-09-25 09:13:27,326 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3097 transitions. Word has length 161 [2020-09-25 09:13:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:27,327 INFO L479 AbstractCegarLoop]: Abstraction has 2434 states and 3097 transitions. [2020-09-25 09:13:27,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:13:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3097 transitions. [2020-09-25 09:13:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 09:13:27,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:27,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:13:27,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:13:27,332 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:27,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1651542877, now seen corresponding path program 1 times [2020-09-25 09:13:27,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:27,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169364881] [2020-09-25 09:13:27,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:27,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:27,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:27,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:27,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:27,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking...