/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:48:55,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:48:55,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:48:55,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:48:55,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:48:55,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:48:55,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:48:55,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:48:55,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:48:55,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:48:55,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:48:55,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:48:55,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:48:55,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:48:55,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:48:55,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:48:55,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:48:55,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:48:55,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:48:55,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:48:55,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:48:55,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:48:55,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:48:55,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:48:55,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:48:55,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:48:55,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:48:55,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:48:55,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:48:55,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:48:55,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:48:55,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:48:55,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:48:55,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:48:55,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:48:55,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:48:55,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:48:55,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:48:55,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:48:55,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:48:55,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:48:55,700 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 [2020-10-28 19:48:55,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:48:55,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:48:55,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:48:55,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:48:55,730 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:48:55,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:48:55,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:48:55,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:48:55,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:48:55,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:48:55,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:48:55,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:48:55,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:48:55,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:48:55,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:48:55,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:48:55,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:48:55,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:48:55,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:48:55,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:48:55,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:48:55,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:48:55,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:48:55,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:48:55,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:48:55,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:48:55,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:48:55,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:48:55,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:48:55,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:48:56,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:48:56,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:48:56,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:48:56,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:48:56,137 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:48:56,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-10-28 19:48:56,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4faf2d9a/56a296eecb5b44d49bbae04ac717febe/FLAGaa3b1163f [2020-10-28 19:48:56,761 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:48:56,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-10-28 19:48:56,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4faf2d9a/56a296eecb5b44d49bbae04ac717febe/FLAGaa3b1163f [2020-10-28 19:48:57,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4faf2d9a/56a296eecb5b44d49bbae04ac717febe [2020-10-28 19:48:57,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:48:57,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:48:57,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:48:57,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:48:57,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:48:57,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:48:57" (1/1) ... [2020-10-28 19:48:57,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcaa187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57, skipping insertion in model container [2020-10-28 19:48:57,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:48:57" (1/1) ... [2020-10-28 19:48:57,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:48:57,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:48:57,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:48:57,375 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:48:57,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:48:57,443 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:48:57,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57 WrapperNode [2020-10-28 19:48:57,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:48:57,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:48:57,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:48:57,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:48:57,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57" (1/1) ... [2020-10-28 19:48:57,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57" (1/1) ... [2020-10-28 19:48:57,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57" (1/1) ... [2020-10-28 19:48:57,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57" (1/1) ... [2020-10-28 19:48:57,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57" (1/1) ... [2020-10-28 19:48:57,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57" (1/1) ... [2020-10-28 19:48:57,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57" (1/1) ... [2020-10-28 19:48:57,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:48:57,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:48:57,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:48:57,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:48:57,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57" (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 [2020-10-28 19:48:57,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:48:57,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:48:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:48:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 19:48:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2020-10-28 19:48:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-10-28 19:48:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-10-28 19:48:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-10-28 19:48:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-10-28 19:48:57,564 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-10-28 19:48:57,564 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-10-28 19:48:57,564 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-28 19:48:57,564 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-28 19:48:57,564 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-10-28 19:48:57,564 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-10-28 19:48:57,564 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-10-28 19:48:57,565 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-28 19:48:57,565 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-28 19:48:57,565 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-28 19:48:57,565 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-28 19:48:57,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:48:57,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:48:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:48:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:48:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:48:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 19:48:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 19:48:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2020-10-28 19:48:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-10-28 19:48:57,567 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-10-28 19:48:57,567 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-10-28 19:48:57,567 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-10-28 19:48:57,567 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-10-28 19:48:57,567 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-10-28 19:48:57,567 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-28 19:48:57,567 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-28 19:48:57,568 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-10-28 19:48:57,568 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-10-28 19:48:57,568 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-10-28 19:48:57,568 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-28 19:48:57,568 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-28 19:48:57,568 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-28 19:48:57,568 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-28 19:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:48:58,205 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:48:58,206 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 19:48:58,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:48:58 BoogieIcfgContainer [2020-10-28 19:48:58,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:48:58,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:48:58,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:48:58,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:48:58,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:48:57" (1/3) ... [2020-10-28 19:48:58,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f94f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:48:58, skipping insertion in model container [2020-10-28 19:48:58,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:48:57" (2/3) ... [2020-10-28 19:48:58,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f94f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:48:58, skipping insertion in model container [2020-10-28 19:48:58,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:48:58" (3/3) ... [2020-10-28 19:48:58,217 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2020-10-28 19:48:58,231 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:48:58,237 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:48:58,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:48:58,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:48:58,278 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:48:58,278 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:48:58,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:48:58,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:48:58,279 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:48:58,279 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:48:58,279 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:48:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-10-28 19:48:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 19:48:58,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:58,310 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] [2020-10-28 19:48:58,310 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:58,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1621750076, now seen corresponding path program 1 times [2020-10-28 19:48:58,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:58,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175461590] [2020-10-28 19:48:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:58,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 19:49:02,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:49:02,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3569 [2020-10-28 19:49:02,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:49:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 19:49:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:49:02,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:02,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:49:02,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:02,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:02,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:49:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:02,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:49:02,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:49:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:02,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 19:49:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:02,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:49:02,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 19:49:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:02,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 19:49:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:02,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:49:02,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 19:49:02,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 19:49:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:02,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:49:02,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 19:49:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:02,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:49:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 19:49:02,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:49:02,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 19:49:02,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:49:02,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 19:49:02,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:02,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 19:49:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:02,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:49:02,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 19:49:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 19:49:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:02,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:49:02,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:49:02,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 19:49:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:02,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:49:02,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 19:49:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:02,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 19:49:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:49:02,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:49:02,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:49:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:49:02,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175461590] [2020-10-28 19:49:02,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:49:02,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 19:49:02,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649355693] [2020-10-28 19:49:02,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 19:49:02,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:02,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 19:49:02,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 19:49:02,724 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 9 states. [2020-10-28 19:49:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:06,858 INFO L93 Difference]: Finished difference Result 550 states and 909 transitions. [2020-10-28 19:49:06,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 19:49:06,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-28 19:49:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:06,880 INFO L225 Difference]: With dead ends: 550 [2020-10-28 19:49:06,880 INFO L226 Difference]: Without dead ends: 409 [2020-10-28 19:49:06,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-28 19:49:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-28 19:49:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 221. [2020-10-28 19:49:07,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-28 19:49:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 287 transitions. [2020-10-28 19:49:07,017 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 287 transitions. Word has length 71 [2020-10-28 19:49:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:07,017 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 287 transitions. [2020-10-28 19:49:07,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 19:49:07,018 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 287 transitions. [2020-10-28 19:49:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 19:49:07,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:07,021 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] [2020-10-28 19:49:07,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:49:07,022 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:07,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:07,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1136575357, now seen corresponding path program 1 times [2020-10-28 19:49:07,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:07,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098100269] [2020-10-28 19:49:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:07,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 19:49:12,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:49:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:49:12,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 19:49:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:49:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 19:49:12,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:12,223 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-28 19:49:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:12,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:12,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:49:12,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:12,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:49:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:12,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:49:12,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:49:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:12,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 19:49:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:12,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:12,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:49:12,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:49:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:49:12,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:49:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 19:49:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:12,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:49:12,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 19:49:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 19:49:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:12,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:49:12,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:49:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 19:49:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:12,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:49:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 19:49:12,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 19:49:12,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 19:49:12,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 19:49:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 19:49:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:12,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:49:12,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:12,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:49:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 19:49:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:49:12,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 19:49:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:12,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:49:12,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 19:49:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 19:49:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 19:49:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:12,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:12,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:49:12,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:49:12,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:12,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:49:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:49:12,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098100269] [2020-10-28 19:49:12,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:49:12,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 19:49:12,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283120135] [2020-10-28 19:49:12,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 19:49:12,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:12,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 19:49:12,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:49:12,672 INFO L87 Difference]: Start difference. First operand 221 states and 287 transitions. Second operand 10 states. [2020-10-28 19:49:12,908 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-28 19:49:15,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:15,571 INFO L93 Difference]: Finished difference Result 909 states and 1347 transitions. [2020-10-28 19:49:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 19:49:15,572 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-28 19:49:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:15,581 INFO L225 Difference]: With dead ends: 909 [2020-10-28 19:49:15,581 INFO L226 Difference]: Without dead ends: 707 [2020-10-28 19:49:15,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2020-10-28 19:49:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-10-28 19:49:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 439. [2020-10-28 19:49:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-28 19:49:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 577 transitions. [2020-10-28 19:49:15,705 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 577 transitions. Word has length 71 [2020-10-28 19:49:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:15,705 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 577 transitions. [2020-10-28 19:49:15,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 19:49:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 577 transitions. [2020-10-28 19:49:15,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 19:49:15,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:15,708 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] [2020-10-28 19:49:15,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:49:15,709 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:15,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:15,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1339911357, now seen corresponding path program 1 times [2020-10-28 19:49:15,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:15,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747069638] [2020-10-28 19:49:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:15,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:20,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:20,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 19:49:20,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 19:49:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 19:49:20,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:20,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 19:49:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 19:49:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 19:49:20,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:20,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:20,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:20,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:20,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:49:20,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:20,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:20,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:49:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:20,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:20,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:20,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:49:20,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:20,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:20,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 19:49:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:20,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:20,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:20,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:20,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:20,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:20,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:20,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 19:49:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:20,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:20,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:20,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:20,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:20,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 19:49:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:20,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:20,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:20,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:20,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:20,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:20,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:20,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:20,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:20,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:20,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:20,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:49:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:20,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:21,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 19:49:21,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:49:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 19:49:21,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:21,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 19:49:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 19:49:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 19:49:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:21,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 19:49:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:21,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:21,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:21,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:21,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:21,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:21,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:21,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 19:49:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:21,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:21,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:21,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:21,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:49:21,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:21,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 19:49:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:21,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 19:49:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:21,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:21,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:21,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:21,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:21,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 19:49:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:21,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:21,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 19:49:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:21,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:21,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:49:21,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:21,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:21,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:21,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:49:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:21,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:49:21,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747069638] [2020-10-28 19:49:21,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:49:21,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 19:49:21,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537931092] [2020-10-28 19:49:21,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 19:49:21,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:21,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 19:49:21,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 19:49:21,095 INFO L87 Difference]: Start difference. First operand 439 states and 577 transitions. Second operand 11 states. [2020-10-28 19:49:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:23,664 INFO L93 Difference]: Finished difference Result 1143 states and 1652 transitions. [2020-10-28 19:49:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 19:49:23,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-28 19:49:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:23,680 INFO L225 Difference]: With dead ends: 1143 [2020-10-28 19:49:23,681 INFO L226 Difference]: Without dead ends: 731 [2020-10-28 19:49:23,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-28 19:49:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-10-28 19:49:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 459. [2020-10-28 19:49:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-28 19:49:23,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 597 transitions. [2020-10-28 19:49:23,777 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 597 transitions. Word has length 71 [2020-10-28 19:49:23,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:23,779 INFO L481 AbstractCegarLoop]: Abstraction has 459 states and 597 transitions. [2020-10-28 19:49:23,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 19:49:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 597 transitions. [2020-10-28 19:49:23,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 19:49:23,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:23,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:49:23,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:49:23,788 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:23,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1401950971, now seen corresponding path program 1 times [2020-10-28 19:49:23,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:23,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448920954] [2020-10-28 19:49:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:24,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:24,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 19:49:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:49:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-28 19:49:24,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:24,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 19:49:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 19:49:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 19:49:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:24,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:24,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:24,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:49:24,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:24,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:24,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:49:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:24,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:24,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:24,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:24,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:49:24,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:24,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:24,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 19:49:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:24,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:24,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:24,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:24,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:24,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 19:49:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:24,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:24,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:24,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:24,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:24,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:24,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:24,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:24,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 19:49:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:24,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:24,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:24,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:24,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:24,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:49:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:24,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:24,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 19:49:24,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:49:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:24,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 19:49:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 19:49:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 19:49:24,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:24,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 19:49:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:24,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:24,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:24,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:24,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:49:24,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:24,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 19:49:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:49:25,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 19:49:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:25,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:25,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:25,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:25,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:25,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 19:49:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:25,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 19:49:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:25,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:25,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:25,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:25,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:25,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:25,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 19:49:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:25,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:25,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 19:49:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:25,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:25,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:25,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:49:25,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:25,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:25,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:25,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:49:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:49:25,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448920954] [2020-10-28 19:49:25,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:49:25,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 19:49:25,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671591980] [2020-10-28 19:49:25,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 19:49:25,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:25,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 19:49:25,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 19:49:25,060 INFO L87 Difference]: Start difference. First operand 459 states and 597 transitions. Second operand 11 states. [2020-10-28 19:49:27,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:27,280 INFO L93 Difference]: Finished difference Result 1147 states and 1630 transitions. [2020-10-28 19:49:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:49:27,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-28 19:49:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:27,288 INFO L225 Difference]: With dead ends: 1147 [2020-10-28 19:49:27,288 INFO L226 Difference]: Without dead ends: 715 [2020-10-28 19:49:27,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-28 19:49:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-28 19:49:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 464. [2020-10-28 19:49:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-28 19:49:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 599 transitions. [2020-10-28 19:49:27,356 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 599 transitions. Word has length 71 [2020-10-28 19:49:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:27,356 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 599 transitions. [2020-10-28 19:49:27,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 19:49:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 599 transitions. [2020-10-28 19:49:27,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 19:49:27,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:27,358 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] [2020-10-28 19:49:27,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:49:27,358 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:27,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:27,359 INFO L82 PathProgramCache]: Analyzing trace with hash 557945469, now seen corresponding path program 1 times [2020-10-28 19:49:27,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:27,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645745083] [2020-10-28 19:49:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 19:49:27,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 19:49:27,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 19:49:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:49:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 19:49:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:27,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:49:27,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:49:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:27,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:49:27,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:49:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 19:49:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:27,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:49:27,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:49:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:49:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 19:49:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:27,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:49:27,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 19:49:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 19:49:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:27,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:49:27,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:49:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 19:49:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:49:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 19:49:27,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:49:27,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 19:49:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 19:49:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:27,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:27,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 19:49:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:49:27,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:27,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 19:49:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 19:49:27,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:49:27,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:49:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 19:49:27,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 19:49:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:27,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:49:27,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:49:27,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:27,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:49:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:27,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:49:27,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645745083] [2020-10-28 19:49:27,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:49:27,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 19:49:27,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688937889] [2020-10-28 19:49:27,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 19:49:27,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:27,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 19:49:27,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 19:49:27,904 INFO L87 Difference]: Start difference. First operand 464 states and 599 transitions. Second operand 11 states. [2020-10-28 19:49:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:31,262 INFO L93 Difference]: Finished difference Result 1784 states and 2579 transitions. [2020-10-28 19:49:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 19:49:31,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-28 19:49:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:31,272 INFO L225 Difference]: With dead ends: 1784 [2020-10-28 19:49:31,273 INFO L226 Difference]: Without dead ends: 1345 [2020-10-28 19:49:31,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2020-10-28 19:49:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-10-28 19:49:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 931. [2020-10-28 19:49:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-10-28 19:49:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1207 transitions. [2020-10-28 19:49:31,397 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1207 transitions. Word has length 71 [2020-10-28 19:49:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:31,398 INFO L481 AbstractCegarLoop]: Abstraction has 931 states and 1207 transitions. [2020-10-28 19:49:31,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 19:49:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1207 transitions. [2020-10-28 19:49:31,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 19:49:31,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:31,400 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] [2020-10-28 19:49:31,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:49:31,400 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:31,401 INFO L82 PathProgramCache]: Analyzing trace with hash 980647295, now seen corresponding path program 1 times [2020-10-28 19:49:31,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:31,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985147881] [2020-10-28 19:49:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 19:49:31,418 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 19:49:31,418 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 19:49:31,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:49:31,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 07:49:31 BoogieIcfgContainer [2020-10-28 19:49:31,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 19:49:31,448 INFO L168 Benchmark]: Toolchain (without parser) took 34328.06 ms. Allocated memory was 152.0 MB in the beginning and 508.6 MB in the end (delta: 356.5 MB). Free memory was 127.9 MB in the beginning and 246.8 MB in the end (delta: -118.9 MB). Peak memory consumption was 238.0 MB. Max. memory is 8.0 GB. [2020-10-28 19:49:31,449 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 19:49:31,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.27 ms. Allocated memory is still 152.0 MB. Free memory was 127.2 MB in the beginning and 114.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 19:49:31,450 INFO L168 Benchmark]: Boogie Preprocessor took 43.96 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 112.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 19:49:31,451 INFO L168 Benchmark]: RCFGBuilder took 719.05 ms. Allocated memory is still 152.0 MB. Free memory was 112.6 MB in the beginning and 119.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-28 19:49:31,452 INFO L168 Benchmark]: TraceAbstraction took 33236.25 ms. Allocated memory was 152.0 MB in the beginning and 508.6 MB in the end (delta: 356.5 MB). Free memory was 118.4 MB in the beginning and 246.8 MB in the end (delta: -128.3 MB). Peak memory consumption was 228.7 MB. Max. memory is 8.0 GB. [2020-10-28 19:49:31,455 INFO L339 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 152.0 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.27 ms. Allocated memory is still 152.0 MB. Free memory was 127.2 MB in the beginning and 114.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.96 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 112.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 719.05 ms. Allocated memory is still 152.0 MB. Free memory was 112.6 MB in the beginning and 119.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33236.25 ms. Allocated memory was 152.0 MB in the beginning and 508.6 MB in the end (delta: 356.5 MB). Free memory was 118.4 MB in the beginning and 246.8 MB in the end (delta: -128.3 MB). Peak memory consumption was 228.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int q_buf_0 ; [L18] int q_free ; [L19] int q_read_ev ; [L20] int q_write_ev ; [L21] int q_req_up ; [L22] int q_ev ; [L43] int p_num_write ; [L44] int p_last_write ; [L45] int p_dw_st ; [L46] int p_dw_pc ; [L47] int p_dw_i ; [L48] int c_num_read ; [L49] int c_last_read ; [L50] int c_dr_st ; [L51] int c_dr_pc ; [L52] int c_dr_i ; [L156] static int a_t ; [L458] int __retres1 ; [L462] CALL init_model() [L444] q_free = 1 [L445] q_write_ev = 2 [L446] q_read_ev = q_write_ev [L447] p_num_write = 0 [L448] p_dw_pc = 0 [L449] p_dw_i = 1 [L450] c_num_read = 0 [L451] c_dr_pc = 0 [L452] c_dr_i = 1 [L462] RET init_model() [L463] CALL start_simulation() [L398] int kernel_st ; [L399] int tmp ; [L403] kernel_st = 0 [L404] CALL update_channels() [L214] COND FALSE !((int )q_req_up == 1) [L404] RET update_channels() [L405] CALL init_threads() [L229] COND TRUE (int )p_dw_i == 1 [L230] p_dw_st = 0 [L234] COND TRUE (int )c_dr_i == 1 [L235] c_dr_st = 0 [L405] RET init_threads() [L406] CALL fire_delta_events() [L267] COND FALSE !((int )q_read_ev == 0) [L272] COND FALSE !((int )q_write_ev == 0) [L406] RET fire_delta_events() [L407] CALL activate_threads() [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR is_do_write_p_triggered() [L54] int __retres1 ; [L57] COND FALSE !((int )p_dw_pc == 1) [L67] __retres1 = 0 [L69] return (__retres1); [L305] RET, EXPR is_do_write_p_triggered() [L305] tmp = is_do_write_p_triggered() [L307] COND FALSE !(\read(tmp)) [L313] CALL, EXPR is_do_read_c_triggered() [L73] int __retres1 ; [L76] COND FALSE !((int )c_dr_pc == 1) [L86] __retres1 = 0 [L88] return (__retres1); [L313] RET, EXPR is_do_read_c_triggered() [L313] tmp___0 = is_do_read_c_triggered() [L315] COND FALSE !(\read(tmp___0)) [L407] RET activate_threads() [L408] CALL reset_delta_events() [L285] COND FALSE !((int )q_read_ev == 1) [L290] COND FALSE !((int )q_write_ev == 1) [L408] RET reset_delta_events() [L411] COND TRUE 1 [L414] kernel_st = 1 [L415] CALL eval() [L325] int tmp ; [L326] int tmp___0 ; [L327] int tmp___1 ; [L331] COND TRUE 1 [L334] CALL, EXPR exists_runnable_thread() [L244] int __retres1 ; [L247] COND TRUE (int )p_dw_st == 0 [L248] __retres1 = 1 [L260] return (__retres1); [L334] RET, EXPR exists_runnable_thread() [L334] tmp___1 = exists_runnable_thread() [L336] COND TRUE \read(tmp___1) [L341] COND TRUE (int )p_dw_st == 0 [L343] tmp = __VERIFIER_nondet_int() [L345] COND FALSE !(\read(tmp)) [L351] CALL error() [L12] CALL reach_error() [L3] __assert_fail("0", "pc_sfifo_2.cil-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 144 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 798 SDtfs, 2550 SDslu, 946 SDs, 0 SdLazy, 6422 SolverSat, 1590 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=931occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 1393 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 426 NumberOfCodeBlocks, 426 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 86240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...