./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52e4ee61a76abd07bd19c87e00a938922ca891ef038e845cba6c6b4d21ef1798 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:52:03,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:52:03,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:52:03,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:52:03,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:52:03,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:52:03,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:52:03,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:52:03,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:52:03,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:52:03,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:52:03,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:52:03,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:52:03,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:52:03,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:52:03,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:52:03,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:52:03,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:52:03,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:52:03,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:52:03,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:52:03,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:52:03,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:52:03,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:52:03,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:52:03,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:52:03,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:52:03,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:52:03,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:52:03,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:52:03,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:52:03,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:52:03,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:52:03,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:52:03,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:52:03,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:52:03,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:52:03,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:52:03,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:52:03,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:52:03,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:52:03,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:52:03,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:52:03,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:52:03,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:52:03,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:52:03,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:52:03,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:52:03,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:52:03,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:52:03,138 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:52:03,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:52:03,140 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:52:03,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:52:03,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:52:03,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:52:03,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:52:03,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:52:03,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:52:03,141 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:52:03,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:52:03,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:52:03,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:52:03,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:52:03,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:52:03,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:52:03,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:52:03,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:52:03,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:52:03,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:52:03,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:52:03,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:52:03,149 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:52:03,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:52:03,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:52:03,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52e4ee61a76abd07bd19c87e00a938922ca891ef038e845cba6c6b4d21ef1798 [2021-12-28 01:52:03,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:52:03,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:52:03,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:52:03,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:52:03,496 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:52:03,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c [2021-12-28 01:52:03,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48dfb2a2e/053d093f5462463dae9d2792daebf712/FLAG82dab99c5 [2021-12-28 01:52:04,455 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:52:04,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c [2021-12-28 01:52:04,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48dfb2a2e/053d093f5462463dae9d2792daebf712/FLAG82dab99c5 [2021-12-28 01:52:04,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48dfb2a2e/053d093f5462463dae9d2792daebf712 [2021-12-28 01:52:04,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:52:04,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:52:04,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:52:04,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:52:04,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:52:04,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:52:04" (1/1) ... [2021-12-28 01:52:04,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d4a860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:04, skipping insertion in model container [2021-12-28 01:52:04,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:52:04" (1/1) ... [2021-12-28 01:52:04,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:52:04,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:52:06,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c[378560,378573] [2021-12-28 01:52:06,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c[383339,383352] [2021-12-28 01:52:06,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:52:06,607 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:52:07,351 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c[378560,378573] [2021-12-28 01:52:07,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c[383339,383352] [2021-12-28 01:52:07,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:52:07,496 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:52:07,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07 WrapperNode [2021-12-28 01:52:07,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:52:07,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:52:07,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:52:07,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:52:07,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:07,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:08,018 INFO L137 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12856 [2021-12-28 01:52:08,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:52:08,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:52:08,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:52:08,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:52:08,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:08,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:08,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:08,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:08,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:08,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:08,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:08,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:52:08,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:52:08,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:52:08,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:52:08,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (1/1) ... [2021-12-28 01:52:08,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:52:08,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:52:08,574 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) [2021-12-28 01:52:08,631 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 [2021-12-28 01:52:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:52:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:52:08,646 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:52:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:52:08,646 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:52:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:52:08,647 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:52:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-28 01:52:08,647 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-28 01:52:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:52:08,647 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:52:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:52:08,648 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:52:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:52:08,648 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:52:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:52:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:52:08,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:52:08,753 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:52:08,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:52:14,623 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:52:14,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:52:14,654 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-28 01:52:14,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:52:14 BoogieIcfgContainer [2021-12-28 01:52:14,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:52:14,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:52:14,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:52:14,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:52:14,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:52:04" (1/3) ... [2021-12-28 01:52:14,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b94963a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:52:14, skipping insertion in model container [2021-12-28 01:52:14,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:07" (2/3) ... [2021-12-28 01:52:14,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b94963a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:52:14, skipping insertion in model container [2021-12-28 01:52:14,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:52:14" (3/3) ... [2021-12-28 01:52:14,665 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.06.cil-1.c [2021-12-28 01:52:14,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:52:14,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 01:52:14,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:52:14,734 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 [2021-12-28 01:52:14,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 01:52:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-28 01:52:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:14,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:14,799 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] [2021-12-28 01:52:14,800 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2021-12-28 01:52:14,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:14,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171724139] [2021-12-28 01:52:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:14,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:15,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:15,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171724139] [2021-12-28 01:52:15,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171724139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:15,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:15,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:52:15,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371930794] [2021-12-28 01:52:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:15,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:52:15,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:15,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:52:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:52:15,295 INFO L87 Difference]: Start difference. First operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-12-28 01:52:16,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:16,303 INFO L93 Difference]: Finished difference Result 4911 states and 9054 transitions. [2021-12-28 01:52:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:52:16,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:16,334 INFO L225 Difference]: With dead ends: 4911 [2021-12-28 01:52:16,334 INFO L226 Difference]: Without dead ends: 2431 [2021-12-28 01:52:16,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:52:16,348 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 596 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 16744 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:16,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 16744 Invalid, 458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 01:52:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-12-28 01:52:16,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2355. [2021-12-28 01:52:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2325 states have (on average 1.8391397849462365) internal successors, (4276), 2328 states have internal predecessors, (4276), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-28 01:52:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4318 transitions. [2021-12-28 01:52:16,492 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4318 transitions. Word has length 113 [2021-12-28 01:52:16,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:16,493 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 4318 transitions. [2021-12-28 01:52:16,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-12-28 01:52:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4318 transitions. [2021-12-28 01:52:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:16,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:16,502 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] [2021-12-28 01:52:16,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:52:16,502 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1110439620, now seen corresponding path program 1 times [2021-12-28 01:52:16,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:16,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035733920] [2021-12-28 01:52:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:16,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:16,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:16,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:16,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:16,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:16,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035733920] [2021-12-28 01:52:16,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035733920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:16,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:16,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:16,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384518405] [2021-12-28 01:52:16,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:16,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:16,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:16,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:16,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:16,763 INFO L87 Difference]: Start difference. First operand 2355 states and 4318 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:18,756 INFO L93 Difference]: Finished difference Result 2966 states and 5298 transitions. [2021-12-28 01:52:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:18,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:18,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:18,773 INFO L225 Difference]: With dead ends: 2966 [2021-12-28 01:52:18,773 INFO L226 Difference]: Without dead ends: 2746 [2021-12-28 01:52:18,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:18,783 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 4790 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 21585 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:18,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4803 Valid, 21585 Invalid, 1950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:52:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2021-12-28 01:52:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2583. [2021-12-28 01:52:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2528 states have (on average 1.8184335443037976) internal successors, (4597), 2533 states have internal predecessors, (4597), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2021-12-28 01:52:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4680 transitions. [2021-12-28 01:52:19,007 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4680 transitions. Word has length 113 [2021-12-28 01:52:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:19,007 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 4680 transitions. [2021-12-28 01:52:19,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:19,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4680 transitions. [2021-12-28 01:52:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:19,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:19,011 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] [2021-12-28 01:52:19,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:52:19,012 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:19,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:19,013 INFO L85 PathProgramCache]: Analyzing trace with hash 240945598, now seen corresponding path program 1 times [2021-12-28 01:52:19,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:19,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597868536] [2021-12-28 01:52:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:19,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:19,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:19,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:19,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597868536] [2021-12-28 01:52:19,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597868536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:19,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:19,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:19,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400277133] [2021-12-28 01:52:19,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:19,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:19,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:19,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:19,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:19,158 INFO L87 Difference]: Start difference. First operand 2583 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:21,035 INFO L93 Difference]: Finished difference Result 3740 states and 6520 transitions. [2021-12-28 01:52:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:21,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:21,053 INFO L225 Difference]: With dead ends: 3740 [2021-12-28 01:52:21,053 INFO L226 Difference]: Without dead ends: 3294 [2021-12-28 01:52:21,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:21,064 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 4814 mSDsluCounter, 16958 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:21,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4827 Valid, 21469 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:52:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2021-12-28 01:52:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3003. [2021-12-28 01:52:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2904 states have (on average 1.7837465564738293) internal successors, (5180), 2911 states have internal predecessors, (5180), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2021-12-28 01:52:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 5333 transitions. [2021-12-28 01:52:21,185 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 5333 transitions. Word has length 113 [2021-12-28 01:52:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:21,185 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 5333 transitions. [2021-12-28 01:52:21,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 5333 transitions. [2021-12-28 01:52:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:21,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:21,188 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] [2021-12-28 01:52:21,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:52:21,189 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:21,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1378029316, now seen corresponding path program 1 times [2021-12-28 01:52:21,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:21,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698611046] [2021-12-28 01:52:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:21,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:21,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:21,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698611046] [2021-12-28 01:52:21,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698611046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:21,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:21,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:21,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950407700] [2021-12-28 01:52:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:21,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:21,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:21,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:21,313 INFO L87 Difference]: Start difference. First operand 3003 states and 5333 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:23,200 INFO L93 Difference]: Finished difference Result 5254 states and 8905 transitions. [2021-12-28 01:52:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:23,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:23,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:23,223 INFO L225 Difference]: With dead ends: 5254 [2021-12-28 01:52:23,226 INFO L226 Difference]: Without dead ends: 4388 [2021-12-28 01:52:23,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:23,238 INFO L933 BasicCegarLoop]: 4555 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21576 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:23,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21576 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:52:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2021-12-28 01:52:23,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 3845. [2021-12-28 01:52:23,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3658 states have (on average 1.7353745215965009) internal successors, (6348), 3669 states have internal predecessors, (6348), 129 states have call successors, (129), 49 states have call predecessors, (129), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-28 01:52:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6647 transitions. [2021-12-28 01:52:23,395 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6647 transitions. Word has length 113 [2021-12-28 01:52:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:23,397 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 6647 transitions. [2021-12-28 01:52:23,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6647 transitions. [2021-12-28 01:52:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:23,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:23,401 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] [2021-12-28 01:52:23,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:52:23,401 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2033428990, now seen corresponding path program 1 times [2021-12-28 01:52:23,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:23,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945304111] [2021-12-28 01:52:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:23,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:23,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:23,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945304111] [2021-12-28 01:52:23,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945304111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:23,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:23,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:23,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337283087] [2021-12-28 01:52:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:23,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:23,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:23,502 INFO L87 Difference]: Start difference. First operand 3845 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:25,441 INFO L93 Difference]: Finished difference Result 8280 states and 13689 transitions. [2021-12-28 01:52:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:25,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:25,475 INFO L225 Difference]: With dead ends: 8280 [2021-12-28 01:52:25,475 INFO L226 Difference]: Without dead ends: 6572 [2021-12-28 01:52:25,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:25,484 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21573 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:25,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21573 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:52:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2021-12-28 01:52:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5535. [2021-12-28 01:52:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5172 states have (on average 1.6805877803557618) internal successors, (8692), 5191 states have internal predecessors, (8692), 249 states have call successors, (249), 97 states have call predecessors, (249), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2021-12-28 01:52:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 9301 transitions. [2021-12-28 01:52:25,726 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 9301 transitions. Word has length 113 [2021-12-28 01:52:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:25,727 INFO L470 AbstractCegarLoop]: Abstraction has 5535 states and 9301 transitions. [2021-12-28 01:52:25,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 9301 transitions. [2021-12-28 01:52:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:25,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:25,732 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] [2021-12-28 01:52:25,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:52:25,732 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2004928700, now seen corresponding path program 1 times [2021-12-28 01:52:25,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:25,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838136155] [2021-12-28 01:52:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:25,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:25,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:25,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838136155] [2021-12-28 01:52:25,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838136155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:25,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:25,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:25,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175546421] [2021-12-28 01:52:25,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:25,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:25,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:25,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:25,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:25,845 INFO L87 Difference]: Start difference. First operand 5535 states and 9301 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:27,827 INFO L93 Difference]: Finished difference Result 14330 states and 23313 transitions. [2021-12-28 01:52:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:27,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:27,897 INFO L225 Difference]: With dead ends: 14330 [2021-12-28 01:52:27,897 INFO L226 Difference]: Without dead ends: 10932 [2021-12-28 01:52:27,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:27,917 INFO L933 BasicCegarLoop]: 4549 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21570 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:27,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21570 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:52:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2021-12-28 01:52:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 8929. [2021-12-28 01:52:28,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8929 states, 8214 states have (on average 1.6313610908205503) internal successors, (13400), 8249 states have internal predecessors, (13400), 489 states have call successors, (489), 193 states have call predecessors, (489), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2021-12-28 01:52:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 14683 transitions. [2021-12-28 01:52:28,407 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 14683 transitions. Word has length 113 [2021-12-28 01:52:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:28,407 INFO L470 AbstractCegarLoop]: Abstraction has 8929 states and 14683 transitions. [2021-12-28 01:52:28,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 14683 transitions. [2021-12-28 01:52:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:28,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:28,414 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] [2021-12-28 01:52:28,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:52:28,415 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:28,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash 64346686, now seen corresponding path program 1 times [2021-12-28 01:52:28,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:28,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831369121] [2021-12-28 01:52:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:28,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:28,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:28,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:28,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831369121] [2021-12-28 01:52:28,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831369121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:28,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:28,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:28,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301928424] [2021-12-28 01:52:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:28,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:28,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:28,536 INFO L87 Difference]: Start difference. First operand 8929 states and 14683 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:30,532 INFO L93 Difference]: Finished difference Result 26428 states and 42749 transitions. [2021-12-28 01:52:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:30,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:30,616 INFO L225 Difference]: With dead ends: 26428 [2021-12-28 01:52:30,617 INFO L226 Difference]: Without dead ends: 19636 [2021-12-28 01:52:30,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:30,654 INFO L933 BasicCegarLoop]: 4546 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21567 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:30,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21567 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 01:52:30,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2021-12-28 01:52:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 15747. [2021-12-28 01:52:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5954773869346734) internal successors, (22860), 14395 states have internal predecessors, (22860), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2021-12-28 01:52:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25653 transitions. [2021-12-28 01:52:31,392 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25653 transitions. Word has length 113 [2021-12-28 01:52:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:31,393 INFO L470 AbstractCegarLoop]: Abstraction has 15747 states and 25653 transitions. [2021-12-28 01:52:31,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25653 transitions. [2021-12-28 01:52:31,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:31,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:31,403 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] [2021-12-28 01:52:31,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:52:31,404 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:31,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1941409916, now seen corresponding path program 1 times [2021-12-28 01:52:31,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:31,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009057472] [2021-12-28 01:52:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:31,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:31,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:31,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009057472] [2021-12-28 01:52:31,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009057472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:31,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:31,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:31,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324264957] [2021-12-28 01:52:31,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:31,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:31,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:31,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:31,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:31,507 INFO L87 Difference]: Start difference. First operand 15747 states and 25653 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:35,112 INFO L93 Difference]: Finished difference Result 56574 states and 91179 transitions. [2021-12-28 01:52:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:52:35,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:35,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:35,290 INFO L225 Difference]: With dead ends: 56574 [2021-12-28 01:52:35,291 INFO L226 Difference]: Without dead ends: 42964 [2021-12-28 01:52:35,358 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 [2021-12-28 01:52:35,359 INFO L933 BasicCegarLoop]: 4539 mSDtfsCounter, 5044 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5064 SdHoareTripleChecker+Valid, 21552 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:35,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5064 Valid, 21552 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:52:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42964 states. [2021-12-28 01:52:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42964 to 29253. [2021-12-28 01:52:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29253 states, 26490 states have (on average 1.575839939599849) internal successors, (41744), 26621 states have internal predecessors, (41744), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2021-12-28 01:52:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29253 states to 29253 states and 47915 transitions. [2021-12-28 01:52:36,881 INFO L78 Accepts]: Start accepts. Automaton has 29253 states and 47915 transitions. Word has length 113 [2021-12-28 01:52:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:36,882 INFO L470 AbstractCegarLoop]: Abstraction has 29253 states and 47915 transitions. [2021-12-28 01:52:36,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 29253 states and 47915 transitions. [2021-12-28 01:52:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:36,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:36,901 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] [2021-12-28 01:52:36,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:52:36,902 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:36,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:36,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1170676350, now seen corresponding path program 1 times [2021-12-28 01:52:36,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:36,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845608097] [2021-12-28 01:52:36,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:36,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:37,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:37,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845608097] [2021-12-28 01:52:37,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845608097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:37,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:37,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:37,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983436383] [2021-12-28 01:52:37,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:37,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:37,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:37,004 INFO L87 Difference]: Start difference. First operand 29253 states and 47915 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:42,231 INFO L93 Difference]: Finished difference Result 107011 states and 175039 transitions. [2021-12-28 01:52:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:52:42,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:42,588 INFO L225 Difference]: With dead ends: 107011 [2021-12-28 01:52:42,588 INFO L226 Difference]: Without dead ends: 79895 [2021-12-28 01:52:42,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:52:42,687 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4978 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4998 SdHoareTripleChecker+Valid, 21544 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:42,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4998 Valid, 21544 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 01:52:42,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79895 states. [2021-12-28 01:52:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79895 to 56327. [2021-12-28 01:52:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56327 states, 50940 states have (on average 1.5670985473105614) internal successors, (79828), 51199 states have internal predecessors, (79828), 3593 states have call successors, (3593), 1537 states have call predecessors, (3593), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2021-12-28 01:52:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56327 states to 56327 states and 94085 transitions. [2021-12-28 01:52:45,990 INFO L78 Accepts]: Start accepts. Automaton has 56327 states and 94085 transitions. Word has length 113 [2021-12-28 01:52:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:45,990 INFO L470 AbstractCegarLoop]: Abstraction has 56327 states and 94085 transitions. [2021-12-28 01:52:45,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 56327 states and 94085 transitions. [2021-12-28 01:52:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 01:52:46,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:46,185 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] [2021-12-28 01:52:46,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:52:46,186 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:46,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash 584400128, now seen corresponding path program 1 times [2021-12-28 01:52:46,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:46,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323721824] [2021-12-28 01:52:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:46,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:46,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:52:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:52:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 01:52:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 01:52:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:46,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:46,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323721824] [2021-12-28 01:52:46,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323721824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:46,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:46,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:46,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132688312] [2021-12-28 01:52:46,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:46,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:46,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:46,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:46,293 INFO L87 Difference]: Start difference. First operand 56327 states and 94085 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-28 01:52:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:55,835 INFO L93 Difference]: Finished difference Result 207177 states and 347363 transitions. [2021-12-28 01:52:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:52:55,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-28 01:52:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:56,452 INFO L225 Difference]: With dead ends: 207177 [2021-12-28 01:52:56,452 INFO L226 Difference]: Without dead ends: 152987