/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:36:21,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:36:21,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:36:21,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:36:21,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:36:21,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:36:21,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:36:21,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:36:21,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:36:21,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:36:21,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:36:21,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:36:21,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:36:21,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:36:21,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:36:21,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:36:21,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:36:21,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:36:21,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:36:21,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:36:21,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:36:21,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:36:21,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:36:21,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:36:21,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:36:21,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:36:21,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:36:21,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:36:21,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:36:21,737 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:36:21,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:36:21,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:36:21,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:36:21,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:36:21,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:36:21,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:36:21,738 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:36:21,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:36:21,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:36:21,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:36:21,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:36:21,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:36:21,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:36:21,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:36:21,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:36:21,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:36:21,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:36:21,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:36:21,739 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:36:21,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:36:21,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:36:21,740 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:36:22,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:36:22,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:36:22,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:36:22,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:36:22,107 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:36:22,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2022-01-10 02:36:22,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2cc5491/195b19705b9e44e5b49a36e828ea6c6c/FLAGb76351769 [2022-01-10 02:36:22,550 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:36:22,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2022-01-10 02:36:22,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2cc5491/195b19705b9e44e5b49a36e828ea6c6c/FLAGb76351769 [2022-01-10 02:36:22,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2cc5491/195b19705b9e44e5b49a36e828ea6c6c [2022-01-10 02:36:22,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:36:22,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:36:22,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:36:22,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:36:22,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:36:22,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:22,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f957ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22, skipping insertion in model container [2022-01-10 02:36:22,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:22,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:36:22,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:36:22,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2022-01-10 02:36:22,809 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2022-01-10 02:36:22,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:36:22,864 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:36:22,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2022-01-10 02:36:22,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2022-01-10 02:36:22,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:36:22,942 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:36:22,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22 WrapperNode [2022-01-10 02:36:22,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:36:22,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:36:22,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:36:22,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:36:22,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:22,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:23,002 INFO L137 Inliner]: procedures = 69, calls = 83, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 793 [2022-01-10 02:36:23,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:36:23,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:36:23,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:36:23,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:36:23,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:23,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:23,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:23,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:23,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:23,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:23,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:23,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:36:23,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:36:23,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:36:23,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:36:23,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (1/1) ... [2022-01-10 02:36:23,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:36:23,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:23,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 02:36:23,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 02:36:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:36:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:36:23,080 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:36:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 02:36:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 02:36:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 02:36:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 02:36:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 02:36:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 02:36:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 02:36:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 02:36:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 02:36:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 02:36:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 02:36:23,082 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 02:36:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 02:36:23,082 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 02:36:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 02:36:23,082 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 02:36:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 02:36:23,082 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 02:36:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 02:36:23,082 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 02:36:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:36:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 02:36:23,082 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 02:36:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 02:36:23,083 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 02:36:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:36:23,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:36:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 02:36:23,083 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 02:36:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 02:36:23,083 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 02:36:23,190 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:36:23,192 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:36:23,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-01-10 02:36:23,679 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-01-10 02:36:23,729 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:36:23,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:36:23,741 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-10 02:36:23,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:36:23 BoogieIcfgContainer [2022-01-10 02:36:23,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:36:23,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:36:23,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:36:23,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:36:23,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:36:22" (1/3) ... [2022-01-10 02:36:23,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3b739f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:36:23, skipping insertion in model container [2022-01-10 02:36:23,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:36:22" (2/3) ... [2022-01-10 02:36:23,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3b739f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:36:23, skipping insertion in model container [2022-01-10 02:36:23,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:36:23" (3/3) ... [2022-01-10 02:36:23,749 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-2.c [2022-01-10 02:36:23,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:36:23,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:36:23,797 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:36:23,803 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:36:23,803 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:36:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-10 02:36:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:36:23,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:23,856 INFO L514 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] [2022-01-10 02:36:23,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:23,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1097425506, now seen corresponding path program 1 times [2022-01-10 02:36:23,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:23,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077670802] [2022-01-10 02:36:23,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:23,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:36:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:36:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:36:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:24,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:24,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077670802] [2022-01-10 02:36:24,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077670802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:24,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:24,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:36:24,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110568759] [2022-01-10 02:36:24,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:24,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:36:24,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:24,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:36:24,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:36:24,264 INFO L87 Difference]: Start difference. First operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:24,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:24,758 INFO L93 Difference]: Finished difference Result 758 states and 1198 transitions. [2022-01-10 02:36:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:36:24,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:36:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:24,769 INFO L225 Difference]: With dead ends: 758 [2022-01-10 02:36:24,770 INFO L226 Difference]: Without dead ends: 389 [2022-01-10 02:36:24,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:24,776 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 596 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:24,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1552 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:36:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-01-10 02:36:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-01-10 02:36:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 317 states have (on average 1.5299684542586751) internal successors, (485), 322 states have internal predecessors, (485), 39 states have call successors, (39), 15 states have call predecessors, (39), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-10 02:36:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 559 transitions. [2022-01-10 02:36:24,823 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 559 transitions. Word has length 65 [2022-01-10 02:36:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:24,824 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 559 transitions. [2022-01-10 02:36:24,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 559 transitions. [2022-01-10 02:36:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:36:24,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:24,826 INFO L514 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] [2022-01-10 02:36:24,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:36:24,826 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:24,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:24,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1810756380, now seen corresponding path program 1 times [2022-01-10 02:36:24,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:24,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138948202] [2022-01-10 02:36:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:24,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:36:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:36:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:36:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:24,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:24,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138948202] [2022-01-10 02:36:24,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138948202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:24,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:24,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:36:24,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422327008] [2022-01-10 02:36:24,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:24,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:36:24,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:36:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:24,941 INFO L87 Difference]: Start difference. First operand 371 states and 559 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:25,683 INFO L93 Difference]: Finished difference Result 626 states and 928 transitions. [2022-01-10 02:36:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:36:25,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:36:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:25,686 INFO L225 Difference]: With dead ends: 626 [2022-01-10 02:36:25,686 INFO L226 Difference]: Without dead ends: 522 [2022-01-10 02:36:25,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:36:25,688 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 967 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:25,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 1615 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:36:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-01-10 02:36:25,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 483. [2022-01-10 02:36:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 407 states have (on average 1.5012285012285012) internal successors, (611), 414 states have internal predecessors, (611), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-01-10 02:36:25,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 716 transitions. [2022-01-10 02:36:25,717 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 716 transitions. Word has length 65 [2022-01-10 02:36:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:25,717 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 716 transitions. [2022-01-10 02:36:25,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 716 transitions. [2022-01-10 02:36:25,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:36:25,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:25,719 INFO L514 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] [2022-01-10 02:36:25,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:36:25,720 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:25,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash -805322276, now seen corresponding path program 1 times [2022-01-10 02:36:25,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:25,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263214641] [2022-01-10 02:36:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:25,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:25,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:36:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:36:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:36:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:25,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:25,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263214641] [2022-01-10 02:36:25,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263214641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:25,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:25,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:36:25,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474892766] [2022-01-10 02:36:25,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:25,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:36:25,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:25,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:36:25,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:25,802 INFO L87 Difference]: Start difference. First operand 483 states and 716 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:26,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:26,635 INFO L93 Difference]: Finished difference Result 880 states and 1281 transitions. [2022-01-10 02:36:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:36:26,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:36:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:26,641 INFO L225 Difference]: With dead ends: 880 [2022-01-10 02:36:26,641 INFO L226 Difference]: Without dead ends: 671 [2022-01-10 02:36:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:36:26,647 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1070 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:26,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 2278 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:36:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-01-10 02:36:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 595. [2022-01-10 02:36:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 497 states have (on average 1.4808853118712273) internal successors, (736), 506 states have internal predecessors, (736), 65 states have call successors, (65), 29 states have call predecessors, (65), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2022-01-10 02:36:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 875 transitions. [2022-01-10 02:36:26,689 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 875 transitions. Word has length 65 [2022-01-10 02:36:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:26,689 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 875 transitions. [2022-01-10 02:36:26,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 875 transitions. [2022-01-10 02:36:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:36:26,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:26,692 INFO L514 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] [2022-01-10 02:36:26,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:36:26,692 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1461058910, now seen corresponding path program 1 times [2022-01-10 02:36:26,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:26,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013848031] [2022-01-10 02:36:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:26,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:26,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:36:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:36:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:36:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:26,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:26,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013848031] [2022-01-10 02:36:26,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013848031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:26,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:26,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:36:26,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516201977] [2022-01-10 02:36:26,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:26,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:36:26,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:36:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:36:26,770 INFO L87 Difference]: Start difference. First operand 595 states and 875 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-10 02:36:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:28,031 INFO L93 Difference]: Finished difference Result 2141 states and 3072 transitions. [2022-01-10 02:36:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 02:36:28,032 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-01-10 02:36:28,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:28,046 INFO L225 Difference]: With dead ends: 2141 [2022-01-10 02:36:28,046 INFO L226 Difference]: Without dead ends: 1808 [2022-01-10 02:36:28,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 02:36:28,071 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 3347 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:28,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3366 Valid, 2281 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:36:28,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-01-10 02:36:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1648. [2022-01-10 02:36:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1345 states have (on average 1.3992565055762083) internal successors, (1882), 1369 states have internal predecessors, (1882), 175 states have call successors, (175), 112 states have call predecessors, (175), 126 states have return successors, (207), 169 states have call predecessors, (207), 171 states have call successors, (207) [2022-01-10 02:36:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2264 transitions. [2022-01-10 02:36:28,222 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2264 transitions. Word has length 65 [2022-01-10 02:36:28,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:28,223 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 2264 transitions. [2022-01-10 02:36:28,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-10 02:36:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2264 transitions. [2022-01-10 02:36:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:36:28,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:28,224 INFO L514 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] [2022-01-10 02:36:28,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:36:28,224 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1639333971, now seen corresponding path program 1 times [2022-01-10 02:36:28,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:28,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631472142] [2022-01-10 02:36:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:28,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:28,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:28,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:28,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:28,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-10 02:36:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:28,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:36:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:28,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:28,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631472142] [2022-01-10 02:36:28,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631472142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:28,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:28,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:36:28,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117023966] [2022-01-10 02:36:28,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:28,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:36:28,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:28,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:36:28,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:36:28,373 INFO L87 Difference]: Start difference. First operand 1648 states and 2264 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:36:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:29,002 INFO L93 Difference]: Finished difference Result 3264 states and 4484 transitions. [2022-01-10 02:36:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:36:29,002 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 02:36:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:29,009 INFO L225 Difference]: With dead ends: 3264 [2022-01-10 02:36:29,009 INFO L226 Difference]: Without dead ends: 1884 [2022-01-10 02:36:29,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:36:29,020 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 465 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:29,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 2472 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:36:29,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2022-01-10 02:36:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1718. [2022-01-10 02:36:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1401 states have (on average 1.3832976445396146) internal successors, (1938), 1425 states have internal predecessors, (1938), 175 states have call successors, (175), 112 states have call predecessors, (175), 140 states have return successors, (221), 183 states have call predecessors, (221), 171 states have call successors, (221) [2022-01-10 02:36:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2334 transitions. [2022-01-10 02:36:29,146 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2334 transitions. Word has length 66 [2022-01-10 02:36:29,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:29,146 INFO L470 AbstractCegarLoop]: Abstraction has 1718 states and 2334 transitions. [2022-01-10 02:36:29,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:36:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2334 transitions. [2022-01-10 02:36:29,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:36:29,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:29,148 INFO L514 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] [2022-01-10 02:36:29,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:36:29,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:29,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash 253130577, now seen corresponding path program 1 times [2022-01-10 02:36:29,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:29,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157433281] [2022-01-10 02:36:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:29,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-10 02:36:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:36:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:29,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:29,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157433281] [2022-01-10 02:36:29,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157433281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:29,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:29,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:36:29,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393303830] [2022-01-10 02:36:29,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:29,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:36:29,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:29,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:36:29,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:36:29,327 INFO L87 Difference]: Start difference. First operand 1718 states and 2334 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:36:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:30,101 INFO L93 Difference]: Finished difference Result 3332 states and 4507 transitions. [2022-01-10 02:36:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:36:30,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 02:36:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:30,107 INFO L225 Difference]: With dead ends: 3332 [2022-01-10 02:36:30,108 INFO L226 Difference]: Without dead ends: 1882 [2022-01-10 02:36:30,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:36:30,112 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 468 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:30,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 2471 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:36:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2022-01-10 02:36:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1758. [2022-01-10 02:36:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1433 states have (on average 1.3705512909979065) internal successors, (1964), 1457 states have internal predecessors, (1964), 175 states have call successors, (175), 112 states have call predecessors, (175), 148 states have return successors, (229), 191 states have call predecessors, (229), 171 states have call successors, (229) [2022-01-10 02:36:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2368 transitions. [2022-01-10 02:36:30,164 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2368 transitions. Word has length 66 [2022-01-10 02:36:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:30,164 INFO L470 AbstractCegarLoop]: Abstraction has 1758 states and 2368 transitions. [2022-01-10 02:36:30,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:36:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2368 transitions. [2022-01-10 02:36:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:36:30,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:30,165 INFO L514 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] [2022-01-10 02:36:30,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:36:30,165 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:30,166 INFO L85 PathProgramCache]: Analyzing trace with hash -776228721, now seen corresponding path program 1 times [2022-01-10 02:36:30,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:30,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158859801] [2022-01-10 02:36:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:30,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:30,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:30,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:30,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:30,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-10 02:36:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:30,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:36:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:30,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:30,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158859801] [2022-01-10 02:36:30,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158859801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:30,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:30,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:36:30,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688322269] [2022-01-10 02:36:30,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:30,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:36:30,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:36:30,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:36:30,258 INFO L87 Difference]: Start difference. First operand 1758 states and 2368 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-10 02:36:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:31,691 INFO L93 Difference]: Finished difference Result 5492 states and 7470 transitions. [2022-01-10 02:36:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 02:36:31,691 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-01-10 02:36:31,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:31,699 INFO L225 Difference]: With dead ends: 5492 [2022-01-10 02:36:31,699 INFO L226 Difference]: Without dead ends: 2155 [2022-01-10 02:36:31,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 02:36:31,706 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 3435 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:31,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3453 Valid, 2317 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:36:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2022-01-10 02:36:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1959. [2022-01-10 02:36:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1564 states have (on average 1.3312020460358056) internal successors, (2082), 1590 states have internal predecessors, (2082), 215 states have call successors, (215), 140 states have call predecessors, (215), 178 states have return successors, (273), 231 states have call predecessors, (273), 211 states have call successors, (273) [2022-01-10 02:36:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2570 transitions. [2022-01-10 02:36:31,765 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2570 transitions. Word has length 66 [2022-01-10 02:36:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:31,765 INFO L470 AbstractCegarLoop]: Abstraction has 1959 states and 2570 transitions. [2022-01-10 02:36:31,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-10 02:36:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2570 transitions. [2022-01-10 02:36:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:36:31,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:31,766 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:31,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:36:31,767 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:31,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:31,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1088286627, now seen corresponding path program 1 times [2022-01-10 02:36:31,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:31,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517828958] [2022-01-10 02:36:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:31,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 02:36:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:36:31,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:31,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517828958] [2022-01-10 02:36:31,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517828958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:31,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:31,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:36:31,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597859486] [2022-01-10 02:36:31,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:31,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:36:31,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:36:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:31,861 INFO L87 Difference]: Start difference. First operand 1959 states and 2570 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:32,703 INFO L93 Difference]: Finished difference Result 3496 states and 4558 transitions. [2022-01-10 02:36:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 02:36:32,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-01-10 02:36:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:32,710 INFO L225 Difference]: With dead ends: 3496 [2022-01-10 02:36:32,711 INFO L226 Difference]: Without dead ends: 2043 [2022-01-10 02:36:32,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-01-10 02:36:32,718 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1093 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:32,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 1960 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:36:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-01-10 02:36:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1738. [2022-01-10 02:36:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1396 states have (on average 1.3330945558739256) internal successors, (1861), 1417 states have internal predecessors, (1861), 187 states have call successors, (187), 121 states have call predecessors, (187), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-01-10 02:36:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2281 transitions. [2022-01-10 02:36:32,772 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2281 transitions. Word has length 91 [2022-01-10 02:36:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:32,773 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 2281 transitions. [2022-01-10 02:36:32,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:32,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2281 transitions. [2022-01-10 02:36:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:36:32,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:32,774 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:32,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:36:32,775 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:32,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1267518623, now seen corresponding path program 1 times [2022-01-10 02:36:32,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:32,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6650383] [2022-01-10 02:36:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:32,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 02:36:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:36:32,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:32,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6650383] [2022-01-10 02:36:32,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6650383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:32,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:32,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:32,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148610860] [2022-01-10 02:36:32,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:32,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:32,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:32,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:32,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:32,843 INFO L87 Difference]: Start difference. First operand 1738 states and 2281 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 02:36:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:33,115 INFO L93 Difference]: Finished difference Result 3314 states and 4341 transitions. [2022-01-10 02:36:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:36:33,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-01-10 02:36:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:33,121 INFO L225 Difference]: With dead ends: 3314 [2022-01-10 02:36:33,121 INFO L226 Difference]: Without dead ends: 1845 [2022-01-10 02:36:33,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:36:33,123 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 1159 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:33,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 1242 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:36:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2022-01-10 02:36:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1738. [2022-01-10 02:36:33,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1396 states have (on average 1.3073065902578798) internal successors, (1825), 1417 states have internal predecessors, (1825), 187 states have call successors, (187), 121 states have call predecessors, (187), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-01-10 02:36:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2245 transitions. [2022-01-10 02:36:33,173 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2245 transitions. Word has length 91 [2022-01-10 02:36:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:33,173 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 2245 transitions. [2022-01-10 02:36:33,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 02:36:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2245 transitions. [2022-01-10 02:36:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 02:36:33,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:33,174 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:33,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:36:33,174 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:33,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:33,175 INFO L85 PathProgramCache]: Analyzing trace with hash -512293133, now seen corresponding path program 1 times [2022-01-10 02:36:33,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:33,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375277723] [2022-01-10 02:36:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:33,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:33,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:33,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:33,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:33,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:33,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 02:36:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:36:33,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:33,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375277723] [2022-01-10 02:36:33,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375277723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:33,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:33,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:36:33,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023670058] [2022-01-10 02:36:33,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:33,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:36:33,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:36:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:36:33,256 INFO L87 Difference]: Start difference. First operand 1738 states and 2245 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:36:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:34,314 INFO L93 Difference]: Finished difference Result 4164 states and 5350 transitions. [2022-01-10 02:36:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 02:36:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-01-10 02:36:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:34,325 INFO L225 Difference]: With dead ends: 4164 [2022-01-10 02:36:34,325 INFO L226 Difference]: Without dead ends: 2540 [2022-01-10 02:36:34,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-01-10 02:36:34,329 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1703 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:34,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 2049 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:36:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2022-01-10 02:36:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2345. [2022-01-10 02:36:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 1849 states have (on average 1.2731206057328286) internal successors, (2354), 1885 states have internal predecessors, (2354), 264 states have call successors, (264), 169 states have call predecessors, (264), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-01-10 02:36:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 2984 transitions. [2022-01-10 02:36:34,428 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 2984 transitions. Word has length 92 [2022-01-10 02:36:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:34,429 INFO L470 AbstractCegarLoop]: Abstraction has 2345 states and 2984 transitions. [2022-01-10 02:36:34,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:36:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 2984 transitions. [2022-01-10 02:36:34,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:34,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:34,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:34,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:36:34,432 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:34,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:34,432 INFO L85 PathProgramCache]: Analyzing trace with hash 959549796, now seen corresponding path program 1 times [2022-01-10 02:36:34,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:34,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943395664] [2022-01-10 02:36:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:34,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:34,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:34,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943395664] [2022-01-10 02:36:34,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943395664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:34,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:34,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:36:34,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312766390] [2022-01-10 02:36:34,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:34,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:36:34,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:36:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:36:34,506 INFO L87 Difference]: Start difference. First operand 2345 states and 2984 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:35,284 INFO L93 Difference]: Finished difference Result 2685 states and 3528 transitions. [2022-01-10 02:36:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:36:35,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:35,313 INFO L225 Difference]: With dead ends: 2685 [2022-01-10 02:36:35,313 INFO L226 Difference]: Without dead ends: 2432 [2022-01-10 02:36:35,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:36:35,315 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 779 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:35,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 1052 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:36:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-01-10 02:36:35,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2345. [2022-01-10 02:36:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 1849 states have (on average 1.2725797728501893) internal successors, (2353), 1885 states have internal predecessors, (2353), 264 states have call successors, (264), 169 states have call predecessors, (264), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-01-10 02:36:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 2983 transitions. [2022-01-10 02:36:35,408 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 2983 transitions. Word has length 124 [2022-01-10 02:36:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:35,408 INFO L470 AbstractCegarLoop]: Abstraction has 2345 states and 2983 transitions. [2022-01-10 02:36:35,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:35,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 2983 transitions. [2022-01-10 02:36:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:35,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:35,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:35,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:36:35,410 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:35,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:35,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1292192934, now seen corresponding path program 1 times [2022-01-10 02:36:35,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:35,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909235761] [2022-01-10 02:36:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:35,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:35,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:35,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909235761] [2022-01-10 02:36:35,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909235761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:35,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:35,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:36:35,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237809629] [2022-01-10 02:36:35,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:35,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:36:35,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:36:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:36:35,493 INFO L87 Difference]: Start difference. First operand 2345 states and 2983 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:36,912 INFO L93 Difference]: Finished difference Result 3015 states and 4054 transitions. [2022-01-10 02:36:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:36:36,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:36,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:36,921 INFO L225 Difference]: With dead ends: 3015 [2022-01-10 02:36:36,922 INFO L226 Difference]: Without dead ends: 2771 [2022-01-10 02:36:36,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:36,923 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 1232 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:36,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 1448 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 02:36:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2022-01-10 02:36:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 2596. [2022-01-10 02:36:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2077 states have (on average 1.306692344727973) internal successors, (2714), 2114 states have internal predecessors, (2714), 280 states have call successors, (280), 175 states have call predecessors, (280), 237 states have return successors, (385), 308 states have call predecessors, (385), 276 states have call successors, (385) [2022-01-10 02:36:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3379 transitions. [2022-01-10 02:36:37,066 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3379 transitions. Word has length 124 [2022-01-10 02:36:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:37,066 INFO L470 AbstractCegarLoop]: Abstraction has 2596 states and 3379 transitions. [2022-01-10 02:36:37,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3379 transitions. [2022-01-10 02:36:37,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:37,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:37,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:37,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:36:37,069 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:37,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash 274544546, now seen corresponding path program 1 times [2022-01-10 02:36:37,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:37,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322979915] [2022-01-10 02:36:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:37,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:37,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:37,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:37,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:37,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:37,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:37,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322979915] [2022-01-10 02:36:37,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322979915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:37,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:37,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:37,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265990833] [2022-01-10 02:36:37,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:37,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:37,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:37,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:37,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:37,150 INFO L87 Difference]: Start difference. First operand 2596 states and 3379 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:38,817 INFO L93 Difference]: Finished difference Result 3613 states and 5003 transitions. [2022-01-10 02:36:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:36:38,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:38,827 INFO L225 Difference]: With dead ends: 3613 [2022-01-10 02:36:38,828 INFO L226 Difference]: Without dead ends: 3118 [2022-01-10 02:36:38,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:36:38,831 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 1239 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 2327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:38,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1265 Valid, 2359 Invalid, 2327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:36:38,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2022-01-10 02:36:38,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 2830. [2022-01-10 02:36:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2288 states have (on average 1.3291083916083917) internal successors, (3041), 2326 states have internal predecessors, (3041), 296 states have call successors, (296), 181 states have call predecessors, (296), 244 states have return successors, (403), 325 states have call predecessors, (403), 292 states have call successors, (403) [2022-01-10 02:36:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3740 transitions. [2022-01-10 02:36:38,956 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3740 transitions. Word has length 124 [2022-01-10 02:36:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:38,956 INFO L470 AbstractCegarLoop]: Abstraction has 2830 states and 3740 transitions. [2022-01-10 02:36:38,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3740 transitions. [2022-01-10 02:36:38,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:38,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:38,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:38,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:36:38,958 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:38,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:38,958 INFO L85 PathProgramCache]: Analyzing trace with hash 392986020, now seen corresponding path program 1 times [2022-01-10 02:36:38,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:38,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149954189] [2022-01-10 02:36:38,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:38,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:39,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:39,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149954189] [2022-01-10 02:36:39,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149954189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:39,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:39,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:39,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383567859] [2022-01-10 02:36:39,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:39,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:39,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:39,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:39,050 INFO L87 Difference]: Start difference. First operand 2830 states and 3740 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:40,783 INFO L93 Difference]: Finished difference Result 4494 states and 6392 transitions. [2022-01-10 02:36:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:36:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:40,796 INFO L225 Difference]: With dead ends: 4494 [2022-01-10 02:36:40,796 INFO L226 Difference]: Without dead ends: 3765 [2022-01-10 02:36:40,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:36:40,802 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 1236 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:40,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 2351 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 02:36:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2022-01-10 02:36:40,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3299. [2022-01-10 02:36:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2711 states have (on average 1.3633345628919218) internal successors, (3696), 2751 states have internal predecessors, (3696), 328 states have call successors, (328), 193 states have call predecessors, (328), 258 states have return successors, (443), 359 states have call predecessors, (443), 324 states have call successors, (443) [2022-01-10 02:36:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4467 transitions. [2022-01-10 02:36:40,948 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4467 transitions. Word has length 124 [2022-01-10 02:36:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:40,949 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 4467 transitions. [2022-01-10 02:36:40,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4467 transitions. [2022-01-10 02:36:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:40,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:40,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:40,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:36:40,950 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:40,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1782280034, now seen corresponding path program 1 times [2022-01-10 02:36:40,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:40,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100550917] [2022-01-10 02:36:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:40,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:40,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:40,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:41,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:41,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:41,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100550917] [2022-01-10 02:36:41,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100550917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:41,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:41,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:41,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962852105] [2022-01-10 02:36:41,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:41,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:41,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:41,033 INFO L87 Difference]: Start difference. First operand 3299 states and 4467 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:42,447 INFO L93 Difference]: Finished difference Result 6191 states and 9055 transitions. [2022-01-10 02:36:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:36:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:42,490 INFO L225 Difference]: With dead ends: 6191 [2022-01-10 02:36:42,490 INFO L226 Difference]: Without dead ends: 4993 [2022-01-10 02:36:42,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:36:42,495 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 1311 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:42,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 1731 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:36:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-01-10 02:36:42,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4238. [2022-01-10 02:36:42,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.4069702079820123) internal successors, (5006), 3602 states have internal predecessors, (5006), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-01-10 02:36:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5927 transitions. [2022-01-10 02:36:42,680 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5927 transitions. Word has length 124 [2022-01-10 02:36:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:42,680 INFO L470 AbstractCegarLoop]: Abstraction has 4238 states and 5927 transitions. [2022-01-10 02:36:42,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5927 transitions. [2022-01-10 02:36:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:42,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:42,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:42,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:36:42,682 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:42,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:42,682 INFO L85 PathProgramCache]: Analyzing trace with hash -251114012, now seen corresponding path program 1 times [2022-01-10 02:36:42,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:42,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356535717] [2022-01-10 02:36:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:42,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:42,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:42,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356535717] [2022-01-10 02:36:42,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356535717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:42,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:42,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:42,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611707159] [2022-01-10 02:36:42,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:42,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:42,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:42,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:42,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:42,757 INFO L87 Difference]: Start difference. First operand 4238 states and 5927 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:43,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:43,810 INFO L93 Difference]: Finished difference Result 7133 states and 10548 transitions. [2022-01-10 02:36:43,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:36:43,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:43,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:43,823 INFO L225 Difference]: With dead ends: 7133 [2022-01-10 02:36:43,823 INFO L226 Difference]: Without dead ends: 4996 [2022-01-10 02:36:43,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:43,829 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 963 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:43,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 1428 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:36:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4996 states. [2022-01-10 02:36:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4996 to 4238. [2022-01-10 02:36:43,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.404440697020798) internal successors, (4997), 3602 states have internal predecessors, (4997), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-01-10 02:36:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5918 transitions. [2022-01-10 02:36:44,004 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5918 transitions. Word has length 124 [2022-01-10 02:36:44,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:44,004 INFO L470 AbstractCegarLoop]: Abstraction has 4238 states and 5918 transitions. [2022-01-10 02:36:44,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5918 transitions. [2022-01-10 02:36:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:44,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:44,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:44,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:36:44,007 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:44,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:44,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1558256410, now seen corresponding path program 1 times [2022-01-10 02:36:44,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:44,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80672820] [2022-01-10 02:36:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:44,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:44,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:44,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:44,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:44,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80672820] [2022-01-10 02:36:44,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80672820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:44,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:44,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:44,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344680096] [2022-01-10 02:36:44,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:44,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:44,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:44,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:44,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:44,085 INFO L87 Difference]: Start difference. First operand 4238 states and 5918 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:45,038 INFO L93 Difference]: Finished difference Result 7123 states and 10501 transitions. [2022-01-10 02:36:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:36:45,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:45,052 INFO L225 Difference]: With dead ends: 7123 [2022-01-10 02:36:45,052 INFO L226 Difference]: Without dead ends: 4986 [2022-01-10 02:36:45,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:45,058 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 1123 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:45,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 1226 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:36:45,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2022-01-10 02:36:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4238. [2022-01-10 02:36:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.401911186059584) internal successors, (4988), 3602 states have internal predecessors, (4988), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-01-10 02:36:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5909 transitions. [2022-01-10 02:36:45,279 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5909 transitions. Word has length 124 [2022-01-10 02:36:45,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:45,279 INFO L470 AbstractCegarLoop]: Abstraction has 4238 states and 5909 transitions. [2022-01-10 02:36:45,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5909 transitions. [2022-01-10 02:36:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:45,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:45,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:45,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:36:45,284 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:45,284 INFO L85 PathProgramCache]: Analyzing trace with hash 339240356, now seen corresponding path program 1 times [2022-01-10 02:36:45,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:45,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190248108] [2022-01-10 02:36:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:45,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:45,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:45,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190248108] [2022-01-10 02:36:45,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190248108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:45,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:45,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:45,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117563903] [2022-01-10 02:36:45,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:45,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:45,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:45,375 INFO L87 Difference]: Start difference. First operand 4238 states and 5909 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:46,497 INFO L93 Difference]: Finished difference Result 7113 states and 10454 transitions. [2022-01-10 02:36:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:36:46,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:46,530 INFO L225 Difference]: With dead ends: 7113 [2022-01-10 02:36:46,530 INFO L226 Difference]: Without dead ends: 4976 [2022-01-10 02:36:46,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:46,534 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 959 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:46,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 1420 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:36:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2022-01-10 02:36:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4238. [2022-01-10 02:36:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.3993816750983699) internal successors, (4979), 3602 states have internal predecessors, (4979), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-01-10 02:36:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5900 transitions. [2022-01-10 02:36:46,757 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5900 transitions. Word has length 124 [2022-01-10 02:36:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:46,758 INFO L470 AbstractCegarLoop]: Abstraction has 4238 states and 5900 transitions. [2022-01-10 02:36:46,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5900 transitions. [2022-01-10 02:36:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:46,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:46,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:46,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:36:46,760 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:46,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1370281254, now seen corresponding path program 1 times [2022-01-10 02:36:46,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:46,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341056071] [2022-01-10 02:36:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:46,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:46,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:46,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341056071] [2022-01-10 02:36:46,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341056071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:46,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:46,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:46,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354063162] [2022-01-10 02:36:46,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:46,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:46,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:46,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:46,835 INFO L87 Difference]: Start difference. First operand 4238 states and 5900 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:48,864 INFO L93 Difference]: Finished difference Result 10403 states and 15491 transitions. [2022-01-10 02:36:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:36:48,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:48,880 INFO L225 Difference]: With dead ends: 10403 [2022-01-10 02:36:48,881 INFO L226 Difference]: Without dead ends: 8266 [2022-01-10 02:36:48,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:36:48,887 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 1282 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:48,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 2429 Invalid, 2597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:36:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2022-01-10 02:36:49,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 6133. [2022-01-10 02:36:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6133 states, 5277 states have (on average 1.4426757627439832) internal successors, (7613), 5329 states have internal predecessors, (7613), 512 states have call successors, (512), 265 states have call predecessors, (512), 342 states have return successors, (711), 555 states have call predecessors, (711), 508 states have call successors, (711) [2022-01-10 02:36:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6133 states to 6133 states and 8836 transitions. [2022-01-10 02:36:49,178 INFO L78 Accepts]: Start accepts. Automaton has 6133 states and 8836 transitions. Word has length 124 [2022-01-10 02:36:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:49,179 INFO L470 AbstractCegarLoop]: Abstraction has 6133 states and 8836 transitions. [2022-01-10 02:36:49,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6133 states and 8836 transitions. [2022-01-10 02:36:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:49,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:49,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:49,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:36:49,183 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:49,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:49,183 INFO L85 PathProgramCache]: Analyzing trace with hash -536122012, now seen corresponding path program 1 times [2022-01-10 02:36:49,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:49,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32826482] [2022-01-10 02:36:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:49,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:49,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:49,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:49,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32826482] [2022-01-10 02:36:49,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32826482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:49,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:49,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:49,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851631361] [2022-01-10 02:36:49,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:49,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:49,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:49,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:49,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:49,282 INFO L87 Difference]: Start difference. First operand 6133 states and 8836 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:51,875 INFO L93 Difference]: Finished difference Result 17788 states and 27001 transitions. [2022-01-10 02:36:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:36:51,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:51,907 INFO L225 Difference]: With dead ends: 17788 [2022-01-10 02:36:51,907 INFO L226 Difference]: Without dead ends: 13756 [2022-01-10 02:36:51,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:36:51,916 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 1459 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:51,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 2300 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 02:36:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13756 states. [2022-01-10 02:36:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13756 to 9746. [2022-01-10 02:36:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9746 states, 8546 states have (on average 1.472384741399485) internal successors, (12583), 8614 states have internal predecessors, (12583), 744 states have call successors, (744), 361 states have call predecessors, (744), 454 states have return successors, (1121), 803 states have call predecessors, (1121), 740 states have call successors, (1121) [2022-01-10 02:36:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9746 states to 9746 states and 14448 transitions. [2022-01-10 02:36:52,452 INFO L78 Accepts]: Start accepts. Automaton has 9746 states and 14448 transitions. Word has length 124 [2022-01-10 02:36:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:52,453 INFO L470 AbstractCegarLoop]: Abstraction has 9746 states and 14448 transitions. [2022-01-10 02:36:52,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 9746 states and 14448 transitions. [2022-01-10 02:36:52,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:52,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:52,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:52,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 02:36:52,458 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:52,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:52,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1064949094, now seen corresponding path program 1 times [2022-01-10 02:36:52,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:52,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863630109] [2022-01-10 02:36:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:52,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:52,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:52,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863630109] [2022-01-10 02:36:52,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863630109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:52,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:52,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:52,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859541818] [2022-01-10 02:36:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:52,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:52,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:52,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:52,534 INFO L87 Difference]: Start difference. First operand 9746 states and 14448 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:56,086 INFO L93 Difference]: Finished difference Result 31775 states and 48871 transitions. [2022-01-10 02:36:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:36:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:36:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:56,248 INFO L225 Difference]: With dead ends: 31775 [2022-01-10 02:36:56,248 INFO L226 Difference]: Without dead ends: 24130 [2022-01-10 02:36:56,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:36:56,303 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 1260 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 2519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:56,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1285 Valid, 2391 Invalid, 2519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 02:36:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24130 states. [2022-01-10 02:36:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24130 to 17115. [2022-01-10 02:36:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17115 states, 15243 states have (on average 1.4974086465918783) internal successors, (22825), 15343 states have internal predecessors, (22825), 1192 states have call successors, (1192), 553 states have call predecessors, (1192), 678 states have return successors, (2087), 1283 states have call predecessors, (2087), 1188 states have call successors, (2087) [2022-01-10 02:36:57,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17115 states to 17115 states and 26104 transitions. [2022-01-10 02:36:57,698 INFO L78 Accepts]: Start accepts. Automaton has 17115 states and 26104 transitions. Word has length 124 [2022-01-10 02:36:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:57,699 INFO L470 AbstractCegarLoop]: Abstraction has 17115 states and 26104 transitions. [2022-01-10 02:36:57,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:36:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 17115 states and 26104 transitions. [2022-01-10 02:36:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:36:57,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:57,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:57,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 02:36:57,707 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash 8217892, now seen corresponding path program 1 times [2022-01-10 02:36:57,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:57,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825276364] [2022-01-10 02:36:57,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:57,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:57,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:36:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:57,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:36:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:36:57,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:57,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825276364] [2022-01-10 02:36:57,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825276364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:57,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:57,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:57,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893916173] [2022-01-10 02:36:57,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:57,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:57,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:57,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:57,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:57,816 INFO L87 Difference]: Start difference. First operand 17115 states and 26104 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:37:03,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:37:03,239 INFO L93 Difference]: Finished difference Result 59606 states and 93149 transitions. [2022-01-10 02:37:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:37:03,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:37:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:37:03,453 INFO L225 Difference]: With dead ends: 59606 [2022-01-10 02:37:03,453 INFO L226 Difference]: Without dead ends: 44592 [2022-01-10 02:37:03,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:37:03,548 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 1445 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:37:03,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 1699 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 02:37:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44592 states. [2022-01-10 02:37:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44592 to 31820. [2022-01-10 02:37:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31820 states, 28636 states have (on average 1.5134446151697165) internal successors, (43339), 28800 states have internal predecessors, (43339), 2056 states have call successors, (2056), 937 states have call predecessors, (2056), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-01-10 02:37:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31820 states to 31820 states and 49868 transitions. [2022-01-10 02:37:05,990 INFO L78 Accepts]: Start accepts. Automaton has 31820 states and 49868 transitions. Word has length 124 [2022-01-10 02:37:05,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:37:05,991 INFO L470 AbstractCegarLoop]: Abstraction has 31820 states and 49868 transitions. [2022-01-10 02:37:05,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:37:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 31820 states and 49868 transitions. [2022-01-10 02:37:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:37:06,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:37:06,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:37:06,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 02:37:06,007 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:37:06,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:37:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1359603110, now seen corresponding path program 1 times [2022-01-10 02:37:06,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:37:06,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257339197] [2022-01-10 02:37:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:37:06,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:37:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:37:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:06,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:37:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:37:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:37:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:37:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:37:06,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:37:06,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257339197] [2022-01-10 02:37:06,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257339197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:37:06,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:37:06,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:37:06,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016192364] [2022-01-10 02:37:06,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:37:06,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:37:06,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:37:06,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:37:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:37:06,080 INFO L87 Difference]: Start difference. First operand 31820 states and 49868 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:37:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:37:09,876 INFO L93 Difference]: Finished difference Result 69865 states and 112203 transitions. [2022-01-10 02:37:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:37:09,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:37:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:37:09,986 INFO L225 Difference]: With dead ends: 69865 [2022-01-10 02:37:09,986 INFO L226 Difference]: Without dead ends: 40146 [2022-01-10 02:37:10,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:37:10,037 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 960 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:37:10,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 1398 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:37:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40146 states. [2022-01-10 02:37:12,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40146 to 31820. [2022-01-10 02:37:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31820 states, 28636 states have (on average 1.5089397960609023) internal successors, (43210), 28800 states have internal predecessors, (43210), 2056 states have call successors, (2056), 937 states have call predecessors, (2056), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-01-10 02:37:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31820 states to 31820 states and 49739 transitions. [2022-01-10 02:37:12,118 INFO L78 Accepts]: Start accepts. Automaton has 31820 states and 49739 transitions. Word has length 124 [2022-01-10 02:37:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:37:12,119 INFO L470 AbstractCegarLoop]: Abstraction has 31820 states and 49739 transitions. [2022-01-10 02:37:12,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:37:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 31820 states and 49739 transitions. [2022-01-10 02:37:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:37:12,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:37:12,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:37:12,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 02:37:12,133 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:37:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:37:12,133 INFO L85 PathProgramCache]: Analyzing trace with hash 476094120, now seen corresponding path program 1 times [2022-01-10 02:37:12,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:37:12,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320333209] [2022-01-10 02:37:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:37:12,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:37:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:37:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:12,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:37:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:37:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:37:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:37:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:37:12,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:37:12,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320333209] [2022-01-10 02:37:12,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320333209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:37:12,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:37:12,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:37:12,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663284905] [2022-01-10 02:37:12,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:37:12,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:37:12,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:37:12,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:37:12,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:37:12,264 INFO L87 Difference]: Start difference. First operand 31820 states and 49739 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:37:20,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:37:20,147 INFO L93 Difference]: Finished difference Result 110241 states and 175479 transitions. [2022-01-10 02:37:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:37:20,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:37:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:37:20,383 INFO L225 Difference]: With dead ends: 110241 [2022-01-10 02:37:20,383 INFO L226 Difference]: Without dead ends: 80522 [2022-01-10 02:37:20,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:37:20,457 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 1254 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:37:20,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1288 Valid, 2277 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:37:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80522 states. [2022-01-10 02:37:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80522 to 61423. [2022-01-10 02:37:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61423 states, 55679 states have (on average 1.5187054365200525) internal successors, (84560), 55971 states have internal predecessors, (84560), 3720 states have call successors, (3720), 1705 states have call predecessors, (3720), 2022 states have return successors, (10639), 4003 states have call predecessors, (10639), 3716 states have call successors, (10639) [2022-01-10 02:37:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61423 states to 61423 states and 98919 transitions. [2022-01-10 02:37:24,796 INFO L78 Accepts]: Start accepts. Automaton has 61423 states and 98919 transitions. Word has length 124 [2022-01-10 02:37:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:37:24,796 INFO L470 AbstractCegarLoop]: Abstraction has 61423 states and 98919 transitions. [2022-01-10 02:37:24,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:37:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 61423 states and 98919 transitions. [2022-01-10 02:37:24,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:37:24,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:37:24,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:37:24,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 02:37:24,820 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:37:24,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:37:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash 447593830, now seen corresponding path program 1 times [2022-01-10 02:37:24,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:37:24,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842826286] [2022-01-10 02:37:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:37:24,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:37:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:37:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:37:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:24,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:37:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:37:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:37:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:37:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:37:24,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:37:24,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842826286] [2022-01-10 02:37:24,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842826286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:37:24,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:37:24,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:37:24,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384458016] [2022-01-10 02:37:24,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:37:24,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:37:24,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:37:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:37:24,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:37:24,894 INFO L87 Difference]: Start difference. First operand 61423 states and 98919 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)