/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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:48:06,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:48:06,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:48:06,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:48:06,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:48:06,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:48:06,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:48:06,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:48:06,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:48:06,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:48:06,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:48:06,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:48:06,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:48:06,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:48:06,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:48:06,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:48:06,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:48:06,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:48:06,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:48:06,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:48:06,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:48:06,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:48:06,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:48:06,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:48:06,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:48:06,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:48:06,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:48:06,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:48:06,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:48:06,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:48:06,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:48:06,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:48:06,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:48:06,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:48:06,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:48:06,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:48:06,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:48:06,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:48:06,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:48:06,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:48:06,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:48:06,597 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 [2020-10-15 04:48:06,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:48:06,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:48:06,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:48:06,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:48:06,623 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:48:06,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:48:06,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:48:06,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:48:06,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:48:06,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:48:06,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:48:06,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:48:06,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:48:06,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:48:06,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:48:06,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:48:06,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:48:06,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:48:06,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:48:06,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:48:06,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:48:06,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:48:06,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:48:06,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:48:06,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:48:06,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:48:06,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:48:06,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:48:06,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:48:06,628 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 -> SequenceOfStatements 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:48:06,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:48:06,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:48:06,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:48:06,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:48:06,946 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:48:06,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-10-15 04:48:07,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7413eaca3/f4a675ed93ba417cb27e6e907866ab81/FLAG19fe6d945 [2020-10-15 04:48:07,544 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:48:07,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-10-15 04:48:07,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7413eaca3/f4a675ed93ba417cb27e6e907866ab81/FLAG19fe6d945 [2020-10-15 04:48:07,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7413eaca3/f4a675ed93ba417cb27e6e907866ab81 [2020-10-15 04:48:07,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:48:07,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:48:07,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:48:07,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:48:07,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:48:07,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:48:07" (1/1) ... [2020-10-15 04:48:07,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2daff610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:07, skipping insertion in model container [2020-10-15 04:48:07,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:48:07" (1/1) ... [2020-10-15 04:48:07,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:48:07,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:48:08,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:48:08,257 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:48:08,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:48:08,435 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:48:08,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08 WrapperNode [2020-10-15 04:48:08,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:48:08,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:48:08,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:48:08,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:48:08,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08" (1/1) ... [2020-10-15 04:48:08,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08" (1/1) ... [2020-10-15 04:48:08,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08" (1/1) ... [2020-10-15 04:48:08,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08" (1/1) ... [2020-10-15 04:48:08,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08" (1/1) ... [2020-10-15 04:48:08,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08" (1/1) ... [2020-10-15 04:48:08,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08" (1/1) ... [2020-10-15 04:48:08,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:48:08,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:48:08,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:48:08,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:48:08,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08" (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 [2020-10-15 04:48:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:48:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:48:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-15 04:48:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2020-10-15 04:48:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-10-15 04:48:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-10-15 04:48:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-10-15 04:48:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-10-15 04:48:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-10-15 04:48:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-10-15 04:48:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-15 04:48:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-15 04:48:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-10-15 04:48:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-10-15 04:48:08,550 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-10-15 04:48:08,550 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-15 04:48:08,550 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-15 04:48:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-15 04:48:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-15 04:48:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:48:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:48:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:48:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-15 04:48:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2020-10-15 04:48:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-10-15 04:48:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-10-15 04:48:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-10-15 04:48:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-10-15 04:48:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-10-15 04:48:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-10-15 04:48:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-15 04:48:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-15 04:48:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-10-15 04:48:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-10-15 04:48:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-10-15 04:48:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-15 04:48:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-15 04:48:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-15 04:48:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-15 04:48:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:48:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:48:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:48:08,986 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:48:08,986 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-15 04:48:08,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:48:08 BoogieIcfgContainer [2020-10-15 04:48:08,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:48:08,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:48:08,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:48:08,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:48:08,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:48:07" (1/3) ... [2020-10-15 04:48:09,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d7f649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:48:09, skipping insertion in model container [2020-10-15 04:48:09,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:48:08" (2/3) ... [2020-10-15 04:48:09,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d7f649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:48:09, skipping insertion in model container [2020-10-15 04:48:09,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:48:08" (3/3) ... [2020-10-15 04:48:09,003 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2020-10-15 04:48:09,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:48:09,041 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:48:09,055 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:48:09,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:48:09,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:48:09,083 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:48:09,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:48:09,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:48:09,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:48:09,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:48:09,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:48:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-15 04:48:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:48:09,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:09,122 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] [2020-10-15 04:48:09,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:09,129 INFO L82 PathProgramCache]: Analyzing trace with hash 742963907, now seen corresponding path program 1 times [2020-10-15 04:48:09,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:09,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586474654] [2020-10-15 04:48:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 04:48:12,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:48:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2671 [2020-10-15 04:48:12,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:48:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 04:48:12,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:48:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:12,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:12,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:48:12,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:12,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 04:48:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:12,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:12,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:48:12,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:48:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:48:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 04:48:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:12,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:48:12,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:12,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:12,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 04:48:12,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:48:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 04:48:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:48:12,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:12,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:48:12,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:48:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:12,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 04:48:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:48:12,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:48:12,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:12,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:48:12,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:48:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:48:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-15 04:48:12,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:12,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 04:48:12,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:48:12,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:12,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 04:48:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 04:48:12,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:12,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:48:12,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:12,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:12,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 04:48:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 04:48:12,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:12,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:48:12,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 04:48:12,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:12,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 04:48:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:48:12,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:48:12,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 04:48:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:12,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:12,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-15 04:48:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:12,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:12,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:48:12,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:48:12,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:12,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 04:48:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:12,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:48:12,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586474654] [2020-10-15 04:48:12,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:12,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:48:12,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154876251] [2020-10-15 04:48:12,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:48:12,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:12,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:48:12,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:48:12,600 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 9 states. [2020-10-15 04:48:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:15,895 INFO L93 Difference]: Finished difference Result 543 states and 901 transitions. [2020-10-15 04:48:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 04:48:15,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-15 04:48:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:15,916 INFO L225 Difference]: With dead ends: 543 [2020-10-15 04:48:15,916 INFO L226 Difference]: Without dead ends: 406 [2020-10-15 04:48:15,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-15 04:48:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-15 04:48:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 217. [2020-10-15 04:48:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-15 04:48:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 281 transitions. [2020-10-15 04:48:16,044 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 281 transitions. Word has length 70 [2020-10-15 04:48:16,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:16,044 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 281 transitions. [2020-10-15 04:48:16,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:48:16,045 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 281 transitions. [2020-10-15 04:48:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:48:16,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:16,049 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] [2020-10-15 04:48:16,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:48:16,049 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:16,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1028507068, now seen corresponding path program 1 times [2020-10-15 04:48:16,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:16,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942084119] [2020-10-15 04:48:16,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:16,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:16,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:20,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:20,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 04:48:20,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:48:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4920 [2020-10-15 04:48:20,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:20,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:48:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:48:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:48:20,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:21,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:48:21,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:21,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 04:48:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:21,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:21,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:48:21,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:48:21,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 04:48:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:21,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:21,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:48:21,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 04:48:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 04:48:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:48:21,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:21,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:48:21,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:48:21,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 04:48:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:48:21,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:21,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:48:21,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 04:48:21,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:48:21,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:48:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-15 04:48:21,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 04:48:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 04:48:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:48:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 04:48:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 04:48:21,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:48:21,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:48:21,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 04:48:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 04:48:21,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:48:21,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:48:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 04:48:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:48:21,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:48:21,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 04:48:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-15 04:48:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:21,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:21,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:48:21,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:48:21,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:21,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 04:48:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:48:21,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942084119] [2020-10-15 04:48:21,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:21,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 04:48:21,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897221691] [2020-10-15 04:48:21,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 04:48:21,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:21,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 04:48:21,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:48:21,431 INFO L87 Difference]: Start difference. First operand 217 states and 281 transitions. Second operand 14 states. [2020-10-15 04:48:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:25,552 INFO L93 Difference]: Finished difference Result 943 states and 1430 transitions. [2020-10-15 04:48:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 04:48:25,553 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-15 04:48:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:25,560 INFO L225 Difference]: With dead ends: 943 [2020-10-15 04:48:25,560 INFO L226 Difference]: Without dead ends: 745 [2020-10-15 04:48:25,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 04:48:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-10-15 04:48:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 442. [2020-10-15 04:48:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-15 04:48:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 570 transitions. [2020-10-15 04:48:25,662 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 570 transitions. Word has length 70 [2020-10-15 04:48:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:25,663 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 570 transitions. [2020-10-15 04:48:25,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 04:48:25,663 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 570 transitions. [2020-10-15 04:48:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:48:25,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:25,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:25,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:48:25,666 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:25,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1473905414, now seen corresponding path program 1 times [2020-10-15 04:48:25,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:25,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016458534] [2020-10-15 04:48:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:25,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 04:48:26,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:48:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-15 04:48:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:48:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:48:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 04:48:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:26,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:26,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:26,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:48:26,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:26,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 04:48:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:26,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:26,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:48:26,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:48:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:26,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 04:48:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:26,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:48:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 04:48:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 04:48:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:48:26,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:48:26,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:48:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:26,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 04:48:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:48:26,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:48:26,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 04:48:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:48:26,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:48:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 04:48:26,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 04:48:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 04:48:26,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:48:26,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 04:48:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 04:48:26,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:48:26,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:48:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 04:48:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 04:48:26,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:26,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:48:26,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 04:48:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:26,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 04:48:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:48:26,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:26,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:48:26,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 04:48:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:26,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:26,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-15 04:48:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:26,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:48:26,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:48:26,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:26,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 04:48:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:48:26,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016458534] [2020-10-15 04:48:26,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:26,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 04:48:26,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454112547] [2020-10-15 04:48:26,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 04:48:26,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:26,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 04:48:26,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:48:26,701 INFO L87 Difference]: Start difference. First operand 442 states and 570 transitions. Second operand 14 states. [2020-10-15 04:48:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:30,325 INFO L93 Difference]: Finished difference Result 1750 states and 2539 transitions. [2020-10-15 04:48:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 04:48:30,325 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-15 04:48:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:30,343 INFO L225 Difference]: With dead ends: 1750 [2020-10-15 04:48:30,344 INFO L226 Difference]: Without dead ends: 1333 [2020-10-15 04:48:30,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 04:48:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-10-15 04:48:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 922. [2020-10-15 04:48:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-10-15 04:48:30,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1188 transitions. [2020-10-15 04:48:30,465 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1188 transitions. Word has length 70 [2020-10-15 04:48:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:30,466 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1188 transitions. [2020-10-15 04:48:30,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 04:48:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1188 transitions. [2020-10-15 04:48:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:48:30,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:30,470 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] [2020-10-15 04:48:30,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:48:30,471 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:30,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:30,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1940814716, now seen corresponding path program 1 times [2020-10-15 04:48:30,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:30,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259936890] [2020-10-15 04:48:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 04:48:30,489 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 04:48:30,489 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 04:48:30,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:48:30,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:48:30 BoogieIcfgContainer [2020-10-15 04:48:30,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 04:48:30,522 INFO L168 Benchmark]: Toolchain (without parser) took 22597.67 ms. Allocated memory was 147.8 MB in the beginning and 499.1 MB in the end (delta: 351.3 MB). Free memory was 103.8 MB in the beginning and 286.3 MB in the end (delta: -182.5 MB). Peak memory consumption was 168.7 MB. Max. memory is 7.1 GB. [2020-10-15 04:48:30,523 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-15 04:48:30,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.34 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.3 MB in the beginning and 180.6 MB in the end (delta: -77.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-10-15 04:48:30,525 INFO L168 Benchmark]: Boogie Preprocessor took 43.18 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-15 04:48:30,525 INFO L168 Benchmark]: RCFGBuilder took 513.18 ms. Allocated memory is still 203.9 MB. Free memory was 177.8 MB in the beginning and 146.1 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-10-15 04:48:30,526 INFO L168 Benchmark]: TraceAbstraction took 21523.99 ms. Allocated memory was 203.9 MB in the beginning and 499.1 MB in the end (delta: 295.2 MB). Free memory was 146.1 MB in the beginning and 286.3 MB in the end (delta: -140.2 MB). Peak memory consumption was 155.0 MB. Max. memory is 7.1 GB. [2020-10-15 04:48:30,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 511.34 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.3 MB in the beginning and 180.6 MB in the end (delta: -77.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.18 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.18 ms. Allocated memory is still 203.9 MB. Free memory was 177.8 MB in the beginning and 146.1 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21523.99 ms. Allocated memory was 203.9 MB in the beginning and 499.1 MB in the end (delta: 295.2 MB). Free memory was 146.1 MB in the beginning and 286.3 MB in the end (delta: -140.2 MB). Peak memory consumption was 155.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int q_buf_0 ; [L16] int q_free ; [L17] int q_read_ev ; [L18] int q_write_ev ; [L19] int q_req_up ; [L20] int q_ev ; [L41] int p_num_write ; [L42] int p_last_write ; [L43] int p_dw_st ; [L44] int p_dw_pc ; [L45] int p_dw_i ; [L46] int c_num_read ; [L47] int c_last_read ; [L48] int c_dr_st ; [L49] int c_dr_pc ; [L50] int c_dr_i ; [L154] static int a_t ; [L456] int __retres1 ; [L460] CALL init_model() [L442] q_free = 1 [L443] q_write_ev = 2 [L444] q_read_ev = q_write_ev [L445] p_num_write = 0 [L446] p_dw_pc = 0 [L447] p_dw_i = 1 [L448] c_num_read = 0 [L449] c_dr_pc = 0 [L450] c_dr_i = 1 [L460] RET init_model() [L461] CALL start_simulation() [L396] int kernel_st ; [L397] int tmp ; [L401] kernel_st = 0 [L402] CALL update_channels() [L212] COND FALSE !((int )q_req_up == 1) [L402] RET update_channels() [L403] CALL init_threads() [L227] COND TRUE (int )p_dw_i == 1 [L228] p_dw_st = 0 [L232] COND TRUE (int )c_dr_i == 1 [L233] c_dr_st = 0 [L403] RET init_threads() [L404] CALL fire_delta_events() [L265] COND FALSE !((int )q_read_ev == 0) [L270] COND FALSE !((int )q_write_ev == 0) [L404] RET fire_delta_events() [L405] CALL activate_threads() [L298] int tmp ; [L299] int tmp___0 ; [L303] CALL, EXPR is_do_write_p_triggered() [L52] int __retres1 ; [L55] COND FALSE !((int )p_dw_pc == 1) [L65] __retres1 = 0 [L67] return (__retres1); [L303] RET, EXPR is_do_write_p_triggered() [L303] tmp = is_do_write_p_triggered() [L305] COND FALSE !(\read(tmp)) [L311] CALL, EXPR is_do_read_c_triggered() [L71] int __retres1 ; [L74] COND FALSE !((int )c_dr_pc == 1) [L84] __retres1 = 0 [L86] return (__retres1); [L311] RET, EXPR is_do_read_c_triggered() [L311] tmp___0 = is_do_read_c_triggered() [L313] COND FALSE !(\read(tmp___0)) [L405] RET activate_threads() [L406] CALL reset_delta_events() [L283] COND FALSE !((int )q_read_ev == 1) [L288] COND FALSE !((int )q_write_ev == 1) [L406] RET reset_delta_events() [L409] COND TRUE 1 [L412] kernel_st = 1 [L413] CALL eval() [L323] int tmp ; [L324] int tmp___0 ; [L325] int tmp___1 ; [L329] COND TRUE 1 [L332] CALL, EXPR exists_runnable_thread() [L242] int __retres1 ; [L245] COND TRUE (int )p_dw_st == 0 [L246] __retres1 = 1 [L258] return (__retres1); [L332] RET, EXPR exists_runnable_thread() [L332] tmp___1 = exists_runnable_thread() [L334] COND TRUE \read(tmp___1) [L339] COND TRUE (int )p_dw_st == 0 [L341] tmp = __VERIFIER_nondet_int() [L343] COND FALSE !(\read(tmp)) [L349] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 20 procedures, 140 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 519 SDtfs, 2171 SDslu, 903 SDs, 0 SdLazy, 5723 SolverSat, 1366 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=922occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 903 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 47265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...